You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [(3aS,6aR)-5-(2-methylphenyl)-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-2-yl]-[6-(2-methoxyethyl)-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]methanone .
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C23H27N5O2
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