You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[(3-bromophenyl)methyl]-4-(3-methyl-N-methylsulfonylanilino)-N-[(2S)-1-oxo-3-phenyl-1-(propylamino)propan-2-yl]butanamide by IUPAC nomenclature, provide its molecular formula.
user
C31H38BrN3O4S
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