You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5aR,8aR)-7-(3,4-dimethylbenzoyl)-1-[(3-fluorophenyl)methyl]-4,5,5a,6,8,8a-hexahydro-3H-pyrrolo[3,4-b]azepin-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H27FN2O2
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