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 5-chloro-3-methyl-N-[(3S)-2-oxo-1-(thiophen-3-ylmethyl)pyrrolidin-3-yl]-1-benzothiophene-2-sulfonamide .
user
C18H17ClN2O3S3
assistant