You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-[[5-(3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-2-yl)-1,3,4-oxadiazol-2-yl]methyl]propan-1-amine by IUPAC nomenclature, provide its molecular formula.
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C13H22N4O
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