You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 4-[4-[(1-thiophen-3-ylcyclopentyl)amino]piperidin-1-yl]benzenesulfonamide is given. What is its corresponding molecular formula?
user
C20H27N3O2S2
assistant