You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-(5-chloro-2-methoxyphenyl)-1-(5-methylthiophen-2-yl)sulfonylpyrrolidine-2-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C17H19ClN2O4S2
assistant