You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-benzhydryl-N-[(2-fluoro-4-methylsulfonylphenyl)methyl]-3-oxo-1H-isoindole-1-carboxamide into molecular formula.
user
C30H25FN2O4S
assistant