You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[(3-bromophenyl)methyl]-N-[(2S)-1-(butylamino)-1-oxo-3-phenylpropan-2-yl]-4-(2-fluoro-N-methylsulfonylanilino)butanamide into molecular formula.
user
C31H37BrFN3O4S
assistant