You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[1-(4-fluorophenyl)sulfonylpiperidin-4-yl]-[(2R)-2-(3-methoxyphenyl)pyrrolidin-1-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H27FN2O4S
assistant