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 (3S,3aS,6aS)-2-phenyl-5-(4-propoxyphenyl)-3-propyl-3a,6a-dihydro-3H-pyrrolo[3,4-d][1,2]oxazole-4,6-dione .
user
C23H26N2O4
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