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  <xs:element name="StockIssuedDuringPeriodSharesIssuanceCommonStockForPatentPurchaseinShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedDuringPeriodSharesIssuanceCommonStockForPatentPurchaseinShares"/>
  <xs:element name="StockIssuedDuringPeriodSharesConversionOfWarrantsToCommonStockinShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedDuringPeriodSharesConversionOfWarrantsToCommonStockinShares"/>
  <xs:element name="StockIssuedCommonStockSharesIssuedForServicesinValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedCommonStockSharesIssuedForServicesinValue"/>
  <xs:element name="StockIssuedDuringPeriodSharesCommonStockSharesIssuedForServicesinShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedDuringPeriodSharesCommonStockSharesIssuedForServicesinShares"/>
  <xs:element name="StockIssuedInValuePendingIssuanceOfCommonStockToAyala" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedInValuePendingIssuanceOfCommonStockToAyala"/>
  <xs:element name="StockIssuedDuringPeriodValueConversionOfBridgeConvertibleNotes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedDuringPeriodValueConversionOfBridgeConvertibleNotes"/>
  <xs:element name="StockIssuedDuringPeriodValueIssuanceOfPrepaidCommonStockInConnectionWithTheRegisteredDirectOffering" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedDuringPeriodValueIssuanceOfPrepaidCommonStockInConnectionWithTheRegisteredDirectOffering"/>
  <xs:element name="StockIssuedDuringPeriodValueWarrantsConvertedIntoCommonStock" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedDuringPeriodValueWarrantsConvertedIntoCommonStock"/>
  <xs:element name="StockIssuedDuringPeriodSharesConversionOfPrepaidCommonStockToCommonStockinShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedDuringPeriodSharesConversionOfPrepaidCommonStockToCommonStockinShares"/>
  <xs:element name="StockIssuedInValueCommonStockIssuedForServices" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedInValueCommonStockIssuedForServices"/>
  <xs:element name="StockIssuedDuringPeriodSharesCommonStockIssuedForServicesinShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedDuringPeriodSharesCommonStockIssuedForServicesinShares"/>
  <xs:element name="AdjustmentsToAdditionalPaidInCapitalPurchaseOfPrepaidCommonStock" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_AdjustmentsToAdditionalPaidInCapitalPurchaseOfPrepaidCommonStock"/>
  <xs:element name="WarrantsExercisedAndProceedsReceivedSharesPendingIssuance" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="osti_WarrantsExercisedAndProceedsReceivedSharesPendingIssuance"/>
  <xs:element name="StockIssuedDuringPeriodValueConversionOfWarrantsToCommonStock" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedDuringPeriodValueConversionOfWarrantsToCommonStock"/>
  <xs:element name="StockIssuedDuringPeriodSharesConversionOfWarrantsToCommonStockInducementinShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedDuringPeriodSharesConversionOfWarrantsToCommonStockInducementinShares"/>
  <xs:element name="PendingIssuanceOfCommonStockToAyala" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_PendingIssuanceOfCommonStockToAyala"/>
  <xs:element name="CommitmentSharesIssuedForEquityLineOfCredit" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="osti_CommitmentSharesIssuedForEquityLineOfCredit"/>
  <xs:element name="SaleOfPreferredStockAndWarrants" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="osti_SaleOfPreferredStockAndWarrants"/>
  <xs:element name="WarrantsIssuedInConnectionWithConvertibleBridgeNotes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="osti_WarrantsIssuedInConnectionWithConvertibleBridgeNotes"/>
  <xs:element name="ConversionOfBridgeNotesAndAccruedInterestIntoCommonStockAndWarrants" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_ConversionOfBridgeNotesAndAccruedInterestIntoCommonStockAndWarrants"/>
  <xs:element name="CommonStockIssuedForPatentPurchase" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_CommonStockIssuedForPatentPurchase"/>
  <xs:element name="ReclassificationOfWarrantLiabilityToEquity" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_ReclassificationOfWarrantLiabilityToEquity"/>
  <xs:element name="TedcoGrantDisclosureTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_TedcoGrantDisclosureTextBlock"/>
  <xs:element name="VATReceivablePolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_VATReceivablePolicyTextBlock"/>
  <xs:element name="RedeemablePreferredStockAndMezzanineEquityPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_RedeemablePreferredStockAndMezzanineEquityPolicyTextBlock"/>
  <xs:element name="FixedAssetPolicyPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_FixedAssetPolicyPolicyTextBlock"/>
  <xs:element name="PatentAmortizationPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_PatentAmortizationPolicyTextBlock"/>
  <xs:element name="PatentLicenseAcquisitionPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_PatentLicenseAcquisitionPolicyTextBlock"/>
  <xs:element name="ScheduleofPreferredStockandCommonStockEquivalentsTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_ScheduleofPreferredStockandCommonStockEquivalentsTableTextBlock"/>
  <xs:element name="ScheduleOfPaymentForFutureMilestoneEventsTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_ScheduleOfPaymentForFutureMilestoneEventsTableTextBlock"/>
  <xs:element name="ScheduleOfCertainFeesAndCorrespondingPaymentTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_ScheduleOfCertainFeesAndCorrespondingPaymentTableTextBlock"/>
  <xs:element name="SignificantAccountingPoliciesScheduleofPreferredStockandCommonStockEquivalentsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="osti_SignificantAccountingPoliciesScheduleofPreferredStockandCommonStockEquivalentsDetailsTable"/>
  <xs:element name="CommitmentsandContingenciesScheduleofFutureMilestonesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="osti_CommitmentsandContingenciesScheduleofFutureMilestonesDetailsTable"/>
  <xs:element name="MilestoneBearingEventDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_MilestoneBearingEventDescription"/>
  <xs:element name="FutureMilestones" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="osti_FutureMilestones"/>
  <xs:element name="CommitmentsandContingenciesScheduleofCertainFeesandCorrespondingPaymentAmountsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="osti_CommitmentsandContingenciesScheduleofCertainFeesandCorrespondingPaymentAmountsDetailsTable"/>
  <xs:element name="PaymentScheduleofServiceFees" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_PaymentScheduleofServiceFees"/>
  <xs:element name="PaymentScheduleServiceFeesRemainderDue" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_PaymentScheduleServiceFeesRemainderDue"/>
  <xs:element name="ServiceFeesRemainderDue" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_ServiceFeesRemainderDue"/>
  <xs:element name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm"/>
  <xs:element name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsForfeitedWeightedAverageRemainingContractualTerm" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsForfeitedWeightedAverageRemainingContractualTerm"/>
  <xs:element name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisedWeightedAverageRemainingContractualTerm" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisedWeightedAverageRemainingContractualTerm"/>
  <xs:element name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerms" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerms"/>
  <xs:element name="EquityScheduleofBlackScholesOptionPricingModelDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="osti_EquityScheduleofBlackScholesOptionPricingModelDetailsTable"/>
  <xs:element name="EquityScheduleofBlackScholesOptionPricingModelDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_EquityScheduleofBlackScholesOptionPricingModelDetailsLineItems"/>
  <xs:element name="OrganizationandDescriptionofBusinessLiquidityandRiskFactorsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="osti_OrganizationandDescriptionofBusinessLiquidityandRiskFactorsDetailsTable"/>
  <xs:element name="GoingConcernTerm" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_GoingConcernTerm"/>
  <xs:element name="NetProceeds" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="osti_NetProceeds"/>
  <xs:element name="SignificantAccountingPoliciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="osti_SignificantAccountingPoliciesDetailsTable"/>
  <xs:element name="StraightLineDepreciatedOverPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_StraightLineDepreciatedOverPeriod"/>
  <xs:element name="NumberOfTradingDays" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_NumberOfTradingDays"/>
  <xs:element name="ClosingPricePerShare" type="dtr:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="osti_ClosingPricePerShare"/>
  <xs:element name="TotalEquityValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_TotalEquityValue"/>
  <xs:element name="PrepaidShare" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_PrepaidShare"/>
  <xs:element name="PrepaidShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_PrepaidShares"/>
  <xs:element name="StockIssuedDuringPeriodSharesStockWarrantsExercised" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedDuringPeriodSharesStockWarrantsExercised"/>
  <xs:element name="StockOptionsExercised" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_StockOptionsExercised"/>
  <xs:element name="OutstandingPrepaid" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_OutstandingPrepaid"/>
  <xs:element name="RelatedPartyTransactionsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="osti_RelatedPartyTransactionsDetailsTable"/>
  <xs:element name="ConvertibleDebtDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="osti_ConvertibleDebtDetailsTable"/>
  <xs:element name="GrossProceeds" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="osti_GrossProceeds"/>
  <xs:element name="AggregateAdditionalCashProceeds" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="osti_AggregateAdditionalCashProceeds"/>
  <xs:element name="TedcoGrantDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="osti_TedcoGrantDetailsTable"/>
  <xs:element name="TedcoGrantDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_TedcoGrantDetailsLineItems"/>
  <xs:element name="NumberOfTranches" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="osti_NumberOfTranches"/>
  <xs:element name="ReimbursableGrantAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="osti_ReimbursableGrantAmount"/>
  <xs:element name="PercentageOfRoyalties" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_PercentageOfRoyalties"/>
  <xs:element name="RoyaltyReductionPercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_RoyaltyReductionPercentage"/>
  <xs:element name="ReimbursementExpirationPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_ReimbursementExpirationPeriod"/>
  <xs:element name="CommitmentsandContingenciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="osti_CommitmentsandContingenciesDetailsTable"/>
  <xs:element name="RentExpense" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="osti_RentExpense"/>
  <xs:element name="MilestonePayments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_MilestonePayments"/>
  <xs:element name="RoyaltyNetSalesPecentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_RoyaltyNetSalesPecentage"/>
  <xs:element name="BundgerUnderAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_BundgerUnderAgreement"/>
  <xs:element name="OutstandingBalanceFees" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_OutstandingBalanceFees"/>
  <xs:element name="PercentageOfRoyaltyPayments" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_PercentageOfRoyaltyPayments"/>
  <xs:element name="EquityDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="osti_EquityDetailsTable"/>
  <xs:element name="PreferredStockSharesDesignated" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="osti_PreferredStockSharesDesignated"/>
  <xs:element name="StockholdersEquityNoteWarrantExerciseInducementExpense" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="osti_StockholdersEquityNoteWarrantExerciseInducementExpense"/>
  <xs:element name="RedeemablePreferredStockMezzanineEquityandWarrantLiabilityDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="osti_RedeemablePreferredStockMezzanineEquityandWarrantLiabilityDetailsTable"/>
  <xs:element name="StockIssuedDuringPeriodSharesPreferredStockSeperableUnits" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_StockIssuedDuringPeriodSharesPreferredStockSeperableUnits"/>
  <xs:element name="PurchaseOfCommonStock" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_PurchaseOfCommonStock"/>
  <xs:element name="SubsequentEventsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="osti_SubsequentEventsDetailsTable"/>
  <xs:element name="PurchasePrice" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_PurchasePrice"/>
  <xs:element name="SubscriptionAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_SubscriptionAmount"/>
  <xs:element name="percentageOfPrincipalAmount" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_percentageOfPrincipalAmount"/>
  <xs:element name="PurchasePricePerUnit" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_PurchasePricePerUnit"/>
  <xs:element name="newPercentageOfMonthlyPayables" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_newPercentageOfMonthlyPayables"/>
  <xs:element name="PercentageOfExercisePrice" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_PercentageOfExercisePrice"/>
  <xs:element name="percentageOfAggreateSubscription" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_percentageOfAggreateSubscription"/>
  <xs:element name="NonAccountableExpense" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_NonAccountableExpense"/>
  <xs:element name="AggregateReimbursementAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="osti_AggregateReimbursementAmount"/>
  <xs:element name="PercentageOfNumberOfSharesIssuable" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_PercentageOfNumberOfSharesIssuable"/>
  <xs:element name="AdvisorExchangeServicesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_AdvisorExchangeServicesMember"/>
  <xs:element name="AgentWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_AgentWarrantsMember"/>
  <xs:element name="AugustBridgeNoteMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_AugustBridgeNoteMember"/>
  <xs:element name="AyalaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_AyalaMember"/>
  <xs:element name="BlinkBioMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_BlinkBioMember"/>
  <xs:element name="BridgeConvertibleNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_BridgeConvertibleNotesMember"/>
  <xs:element name="BridgeWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_BridgeWarrantsMember"/>
  <xs:element name="ChiefOperatingDecisionMakerMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_ChiefOperatingDecisionMakerMember"/>
  <xs:element name="ConsultingFeeMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_ConsultingFeeMember"/>
  <xs:element name="ConvertiblePromissoryNoteMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_ConvertiblePromissoryNoteMember"/>
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  <xs:element name="FairValueOfHER2AssetsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="osti_FairValueOfHER2AssetsMember"/>
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