You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(N-methylsulfonyl-4-propoxyanilino)-N-[[3-[(2-oxopyrrolidin-1-yl)methyl]phenyl]methyl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H31N3O5S
assistant