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  <xs:element id="ptoru_PurchaseOfAdditionalUnitsShares" name="PurchaseOfAdditionalUnitsShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_AggregateIssuanceOfUnits" name="AggregateIssuanceOfUnits" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_ProceedsFromIssuanceOverAllotmentOptions" name="ProceedsFromIssuanceOverAllotmentOptions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="ptoru_LiquidityCapitalResourcesAndGoingConcernPolicyTextBlock" name="LiquidityCapitalResourcesAndGoingConcernPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_WorkingCapital" name="WorkingCapital" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="ptoru_OAPrivatePlacementMember" name="OAPrivatePlacementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_SponsorMember" name="SponsorMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_UnderwritersMember" name="UnderwritersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_DescriptionOfOrganizationAndBusinessOperationsTable" name="DescriptionOfOrganizationAndBusinessOperationsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_SummaryOfSignificantAccountingPoliciesScheduleOfBasicAndDilutedNetIncomePerOrdinaryShareTable" name="SummaryOfSignificantAccountingPoliciesScheduleOfBasicAndDilutedNetIncomePerOrdinaryShareTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_ClassAOrdinarySharesSubjectToPossibleRedemptionPolicyTextBlock" name="ClassAOrdinarySharesSubjectToPossibleRedemptionPolicyTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_ScheduleOfClassAOrdinarySharesSubjectToRedemptionOutstandingAbstract" name="ScheduleOfClassAOrdinarySharesSubjectToRedemptionOutstandingAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_PostBusinessCombinationPrice" name="PostBusinessCombinationPrice" type="dtr:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="ptoru_InitialFairValueMeasurementInput" name="InitialFairValueMeasurementInput" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="ptoru_NumberOfTradingDaysForDeterminingSharePrice" name="NumberOfTradingDaysForDeterminingSharePrice" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_UnitsIssuedDuringPeriodSharesNewIssues" name="UnitsIssuedDuringPeriodSharesNewIssues" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_PercentagesOfUnderwritingDiscount" name="PercentagesOfUnderwritingDiscount" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_DeferredUnderwritersPercentage" name="DeferredUnderwritersPercentage" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_OptionGrossProceedsPercentage" name="OptionGrossProceedsPercentage" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_ShareholdersDeficitTable" name="ShareholdersDeficitTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_PublicWarrantsMember" name="PublicWarrantsMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_NoEventLaterThanBusinessDaysAfterTheClosingBusinessCombinations" name="NoEventLaterThanBusinessDaysAfterTheClosingBusinessCombinations" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_ClassOfWarrantOrRightRedemptionPriceOfWarrantsOrRights" name="ClassOfWarrantOrRightRedemptionPriceOfWarrantsOrRights" type="dtr:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsThresholdConsecutiveTradingDays" name="ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsThresholdConsecutiveTradingDays" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_ClassAOrdinarySharesParValue00001PerShareMember" name="ClassAOrdinarySharesParValue00001PerShareMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsStockPriceTrigger" name="ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsStockPriceTrigger" type="dtr:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_NumberOfTradingDays" name="NumberOfTradingDays" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_FairValueOfWarrantsPricePerShare" name="FairValueOfWarrantsPricePerShare" type="dtr:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_UnitsEachConsistingOfOneClassAOrdinaryShareAndOnethirdOfOneRedeemableWarrantMember" name="UnitsEachConsistingOfOneClassAOrdinaryShareAndOnethirdOfOneRedeemableWarrantMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_WarrantsEachWholeWarrantExercisableForOneClassAOrdinaryShareAtAnExercisePriceOfDollarElevenPointFiftyPerShareMember" name="WarrantsEachWholeWarrantExercisableForOneClassAOrdinaryShareAtAnExercisePriceOfDollarElevenPointFiftyPerShareMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_WarrantTermMember" name="WarrantTermMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_PercentageOfOrdinarySharesVoting" name="PercentageOfOrdinarySharesVoting" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_SaleOfPrivatePlacementWarrants" name="SaleOfPrivatePlacementWarrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="ptoru_OverAllotmentOptionsMember" name="OverAllotmentOptionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_InitialPublicOfferingAbstract" name="InitialPublicOfferingAbstract" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_PrivatePlacementTextBlock" name="PrivatePlacementTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_ProceedsFromSaleOfUnitsNetOfUnderwritingDiscountsPaid" name="ProceedsFromSaleOfUnitsNetOfUnderwritingDiscountsPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="ptoru_DeferredOfferingCostsPaidThroughPromissoryNoteRelatedParty" name="DeferredOfferingCostsPaidThroughPromissoryNoteRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="ptoru_OfferingCostsIncludedInAccruedOfferingCosts" name="OfferingCostsIncludedInAccruedOfferingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="ptoru_DeferredUnderwritingFeePayable" name="DeferredUnderwritingFeePayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="ptoru_PrivatePlacementTable" name="PrivatePlacementTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_NumberOfSharesIssuedPerUnit" name="NumberOfSharesIssuedPerUnit" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="ptoru_NumberOfShares" name="NumberOfShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_WarrantInstrumentsPolicyTextBlock" name="WarrantInstrumentsPolicyTextBlock" type="dtr:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_ClassAOrdinarySharesSubjectToPossibleRedemptionMember" name="ClassAOrdinarySharesSubjectToPossibleRedemptionMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_PublicSharesIssuanceCosts" name="PublicSharesIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="ptoru_CashUnderwritingFees" name="CashUnderwritingFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="ptoru_PostBusinessCombinationOwnershipPercentageOfTheTargetBusiness" name="PostBusinessCombinationOwnershipPercentageOfTheTargetBusiness" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_YearOfInception" name="YearOfInception" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_ClassOfWarrantsOrRightsIssueOfWarrantsDuringThePeriod" name="ClassOfWarrantsOrRightsIssueOfWarrantsDuringThePeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="ptoru_TransactionCosts" name="TransactionCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="ptoru_DeferredUnderwritingFeesPayableNoncurrent" name="DeferredUnderwritingFeesPayableNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xs:element id="ptoru_PercentageOfFairMarketValue" name="PercentageOfFairMarketValue" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_PercentageOfRedeemPublicShares" name="PercentageOfRedeemPublicShares" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_PublicSharePrice" name="PublicSharePrice" type="dtr:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_InterestToPayDissolutionExpenses" name="InterestToPayDissolutionExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xs:element id="ptoru_SummaryofSignificantAccountingPoliciesDetailsTable" name="SummaryofSignificantAccountingPoliciesDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_ScheduleOfBasicAndDilutedNetIncomePerOrdinaryShareAbstract" name="ScheduleOfBasicAndDilutedNetIncomePerOrdinaryShareAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_CashUnderwritingDiscountPercenatge" name="CashUnderwritingDiscountPercenatge" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_ThirdPartyValuationMeasurementInput" name="ThirdPartyValuationMeasurementInput" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_BusinessCombinationMember" name="BusinessCombinationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_RedemptionOfWarrantsMember" name="RedemptionOfWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_PercentageOfConvertedShare" name="PercentageOfConvertedShare" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_PercentageOfVotingRights" name="PercentageOfVotingRights" type="dtr:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_NumberOfOrdinaryShares" name="NumberOfOrdinaryShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xs:element id="ptoru_ReasonableEffortsToCauseTheSameToBecomeEffectiveDays" name="ReasonableEffortsToCauseTheSameToBecomeEffectiveDays" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_PriorToTheWrittenNoticeForTheEmployeeAgreement" name="PriorToTheWrittenNoticeForTheEmployeeAgreement" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_ScheduleOfInformationRegardingMarketAssumptionsUsedInTheLevel3ValuationOfThePublicWarrantsAbstract" name="ScheduleOfInformationRegardingMarketAssumptionsUsedInTheLevel3ValuationOfThePublicWarrantsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_ProbabilityOfDeSPACAndMarketAdjustmentMember" name="ProbabilityOfDeSPACAndMarketAdjustmentMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_CommitmentsandContingenciesDetailsTable" name="CommitmentsandContingenciesDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_TrustAccountMember" name="TrustAccountMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_RepresentativeSharesMember" name="RepresentativeSharesMember" type="dtr:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsThresholdTradingDays" name="ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsThresholdTradingDays" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xs:element id="ptoru_FairValueMeasurementsTable" name="FairValueMeasurementsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xs:element id="ptoru_FairValueMeasurementsDetailsLineItems" name="FairValueMeasurementsDetailsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
</xs:schema>
