You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-[[1-(2-chlorophenyl)-5-[5-(3-methylsulfonylphenyl)thiophen-2-yl]pyrazol-3-yl]methyl]piperazin-1-yl]-1-pyrrolidin-1-ylethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C31H34ClN5O3S2
assistant