You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[1-[1-(thiophen-3-ylmethyl)piperidin-2-yl]ethyl]-1,2-thiazolidine 1,1-dioxide is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H24N2O2S2
assistant