You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-(4-chloro-N-methylsulfonylanilino)-N-[(2-chlorophenyl)methyl]-N-[(2S)-1-oxo-3-phenyl-1-(propan-2-ylamino)propan-2-yl]butanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H35Cl2N3O4S
assistant