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  <xs:element name="ResearchAndDevelopmentRelatedParty" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_ResearchAndDevelopmentRelatedParty"/>
  <xs:element name="GeneralAndAdministrativeRelatedParty" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_GeneralAndAdministrativeRelatedParty"/>
  <xs:element name="StockIssuedDuringPeriodExerciseOfPrefundedWarrants" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="esla_StockIssuedDuringPeriodExerciseOfPrefundedWarrants"/>
  <xs:element name="StockIssuedDuringPeriodSharesExerciseOfPrefundedWarrants" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_StockIssuedDuringPeriodSharesExerciseOfPrefundedWarrants"/>
  <xs:element name="ChangeInFairValueOfDerivativeLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_ChangeInFairValueOfDerivativeLiabilities"/>
  <xs:element name="IncreaseDecreaseInFranchiseTaxPayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_IncreaseDecreaseInFranchiseTaxPayable"/>
  <xs:element name="EmergingGrowthCompanyStatusPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_EmergingGrowthCompanyStatusPolicyTextBlock"/>
  <xs:element name="PrepaidExpensesAndOtherReceivablePolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_PrepaidExpensesAndOtherReceivablePolicyTextBlock"/>
  <xs:element name="WarrantsPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_WarrantsPolicyTextBlock"/>
  <xs:element name="RisksAndUncertaintiesPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_RisksAndUncertaintiesPolicyTextBlock"/>
  <xs:element name="RelatedPartiesPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_RelatedPartiesPolicyTextBlock"/>
  <xs:element name="SignificantAccountingPoliciesScheduleofFinancialAssetandLiabilityatFairValueonaRecurringBasisDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="esla_SignificantAccountingPoliciesScheduleofFinancialAssetandLiabilityatFairValueonaRecurringBasisDetailsTable"/>
  <xs:element name="SignificantAccountingPoliciesScheduleofFinancialLiabilityMeasuredatFairValueDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="esla_SignificantAccountingPoliciesScheduleofFinancialLiabilityMeasuredatFairValueDetailsTable"/>
  <xs:element name="RelatedPartyTransactionRelationship" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_RelatedPartyTransactionRelationship"/>
  <xs:element name="RelatedPartyTransactionNature" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_RelatedPartyTransactionNature"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockIssuableEquityInstrumentsOtherThanOptionsNonvestedNumber" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="esla_ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockIssuableEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockIssuableGrantedEquityInstrumentsOtherThanOptionsGrantsInPeriod" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockIssuableGrantedEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedWeightedAverageRemainingContractualTerms" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedWeightedAverageRemainingContractualTerms"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockIssuableForfeitedEquityInstrumentsOtherThanOptionsInPeriod" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockIssuableForfeitedEquityInstrumentsOtherThanOptionsInPeriod"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriod" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriod"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockIssuableExercisedEquityInstrumentsOtherThanOptionsInPeriod" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockIssuableExercisedEquityInstrumentsOtherThanOptionsInPeriod"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedWeightedAverageGrantDateFairValue" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedWeightedAverageGrantDateFairValue"/>
  <xs:element name="StockBasedCompensationScheduleofEstimatedFairValueoftheStockOptionsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="esla_StockBasedCompensationScheduleofEstimatedFairValueoftheStockOptionsDetailsTable"/>
  <xs:element name="StockBasedCompensationScheduleofStockOptionActivitiesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="esla_StockBasedCompensationScheduleofStockOptionActivitiesDetailsTable"/>
  <xs:element name="ClinicalTrialRelatedServiceFeeARelatedParty" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_ClinicalTrialRelatedServiceFeeARelatedParty"/>
  <xs:element name="ConsultingFee" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_ConsultingFee"/>
  <xs:element name="OrganizationandBusinessOperationsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="esla_OrganizationandBusinessOperationsDetailsTable"/>
  <xs:element name="SignificantAccountingPoliciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="esla_SignificantAccountingPoliciesDetailsTable"/>
  <xs:element name="TrueUpPrice" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_TrueUpPrice"/>
  <xs:element name="ContractualFloorPrice" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_ContractualFloorPrice"/>
  <xs:element name="RelatedPartyTransactionsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="esla_RelatedPartyTransactionsDetailsTable"/>
  <xs:element name="UpfrontPayment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="esla_UpfrontPayment"/>
  <xs:element name="MilestonePayment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="esla_MilestonePayment"/>
  <xs:element name="RemittedAmountofBusinessCombination" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_RemittedAmountofBusinessCombination"/>
  <xs:element name="FeesForAchieveMilestones" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_FeesForAchieveMilestones"/>
  <xs:element name="AdditionalCostPayableToMutualAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_AdditionalCostPayableToMutualAgreement"/>
  <xs:element name="InterestCharges" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_InterestCharges"/>
  <xs:element name="AdditionalInvoicePerPatient" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_AdditionalInvoicePerPatient"/>
  <xs:element name="MileStoneFees" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_MileStoneFees"/>
  <xs:element name="ExchangePreferredShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="esla_ExchangePreferredShares"/>
  <xs:element name="PreferredStockDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="esla_PreferredStockDetailsTable"/>
  <xs:element name="StockholdersDeficitEquityDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="esla_StockholdersDeficitEquityDetailsTable"/>
  <xs:element name="ReceivedCommonSharesOfInvestor" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_ReceivedCommonSharesOfInvestor"/>
  <xs:element name="ThresholdTradingDaysForCommonStock" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_ThresholdTradingDaysForCommonStock"/>
  <xs:element name="GrossProceeds" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_GrossProceeds"/>
  <xs:element name="PurchaseOfCommonStock" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_PurchaseOfCommonStock"/>
  <xs:element name="PurchaseofWarrantsShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_PurchaseofWarrantsShares"/>
  <xs:element name="PeriodToFileRegistrationStatementAfterInitialBusinessCombination" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_PeriodToFileRegistrationStatementAfterInitialBusinessCombination"/>
  <xs:element name="PeriodForRegistrationStatementToBecomeEffective" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_PeriodForRegistrationStatementToBecomeEffective"/>
  <xs:element name="RedemptionPricePerWarrant" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_RedemptionPricePerWarrant"/>
  <xs:element name="NumberOfDaysReceiveInvestorAfterTheDateOfClosingOfBusinessCombination" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_NumberOfDaysReceiveInvestorAfterTheDateOfClosingOfBusinessCombination"/>
  <xs:element name="RedemptionPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_RedemptionPeriod"/>
  <xs:element name="ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsStockPriceTrigger" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsStockPriceTrigger"/>
  <xs:element name="ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsThresholdTradingDays" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsThresholdTradingDays"/>
  <xs:element name="ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsConsecutiveTradingDays" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsConsecutiveTradingDays"/>
  <xs:element name="PreFundedWarrantsRemainedUnexercised" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_PreFundedWarrantsRemainedUnexercised"/>
  <xs:element name="StockBasedCompensationDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="esla_StockBasedCompensationDetailsTable"/>
  <xs:element name="PurchaseOfCommonShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="esla_PurchaseOfCommonShares"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsOptions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsOptions"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentUnvestedCompensationCost" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="esla_ShareBasedCompensationArrangementByShareBasedPaymentUnvestedCompensationCost"/>
  <xs:element name="EmploymentServicePeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_EmploymentServicePeriod"/>
  <xs:element name="SegmentInformationDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="esla_SegmentInformationDetailsTable"/>
  <xs:element name="SubsequentEventsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="esla_SubsequentEventsDetailsTable"/>
  <xs:element name="CoFameMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_CoFameMember"/>
  <xs:element name="CommonStockParValue00001PerShareMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_CommonStockParValue00001PerShareMember"/>
  <xs:element name="CommonStockWarrantMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_CommonStockWarrantMember"/>
  <xs:element name="CommonStockWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_CommonStockWarrantsMember"/>
  <xs:element name="ConsultingAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_ConsultingAgreementMember"/>
  <xs:element name="EurekaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_EurekaMember"/>
  <xs:element name="EurekaOneMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_EurekaOneMember"/>
  <xs:element name="InvestorsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_InvestorsMember"/>
  <xs:element name="January2026RegisteredDirectOfferingAndPrivatePlacementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_January2026RegisteredDirectOfferingAndPrivatePlacementMember"/>
  <xs:element name="PIPEInvestmentMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_PIPEInvestmentMember"/>
  <xs:element name="PatientDosingMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_PatientDosingMember"/>
  <xs:element name="PatientTreatmentExpensesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_PatientTreatmentExpensesMember"/>
  <xs:element name="PreFundedWarrantMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_PreFundedWarrantMember"/>
  <xs:element name="PreFundedWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_PreFundedWarrantsMember"/>
  <xs:element name="PublicWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_PublicWarrantsMember"/>
  <xs:element name="SecondSiteActivationMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_SecondSiteActivationMember"/>
  <xs:element name="SecuritiesInvestorProtectionCorporationMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_SecuritiesInvestorProtectionCorporationMember"/>
  <xs:element name="SecuritiesPurchaseAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_SecuritiesPurchaseAgreementMember"/>
  <xs:element name="SeriesAAPreferredStockMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_SeriesAAPreferredStockMember"/>
  <xs:element name="StandardInsuranceCoverageMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_StandardInsuranceCoverageMember"/>
  <xs:element name="StatementofWorkMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_StatementofWorkMember"/>
  <xs:element name="StockOptionsGrantedMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_StockOptionsGrantedMember"/>
  <xs:element name="StockRepurchaseProgramMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_StockRepurchaseProgramMember"/>
  <xs:element name="SubscriptionAgreementsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_SubscriptionAgreementsMember"/>
  <xs:element name="TwoThousandAndTwentyThreeOmnibusIncentivePlanMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_TwoThousandAndTwentyThreeOmnibusIncentivePlanMember"/>
  <xs:element name="TwoThousandAndTwentyThreePlanMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_TwoThousandAndTwentyThreePlanMember"/>
  <xs:element name="TwoThousandTwentyFiveSecuritiesPurchaseAgreementsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_TwoThousandTwentyFiveSecuritiesPurchaseAgreementsMember"/>
  <xs:element name="WarrantsEachWholeWarrantExercisableForOneShareOfCommonStockAtAnExercisePriceOf1150Member" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_WarrantsEachWholeWarrantExercisableForOneShareOfCommonStockAtAnExercisePriceOf1150Member"/>
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  <xs:element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="esla_DocumentAndEntityInformationAbstract"/>
</xs:schema>
