You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (2S)-N-butyl-2-[[2-(3-chloro-N-methylsulfonylanilino)acetyl]-[(3,4-dichlorophenyl)methyl]amino]propanamide .
user
C23H28Cl3N3O4S
assistant