You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2S)-2-[4-(3-methyl-N-methylsulfonylanilino)butanoyl-[(3-methylphenyl)methyl]amino]-N-(2-methylpropyl)butanamide .
user
C28H41N3O4S
assistant