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 2-[[2-[N-(benzenesulfonyl)-3-(trifluoromethyl)anilino]acetyl]-[(2-chlorophenyl)methyl]amino]-N-ethylbutanamide .
user
C28H29ClF3N3O4S
assistant