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)-N-butyl-2-[[2-(3-chloro-4-methoxy-N-(4-methylphenyl)sulfonylanilino)acetyl]-[(2-methylphenyl)methyl]amino]propanamide .
user
C31H38ClN3O5S
assistant