You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(4-chlorophenyl)sulfonyl-N-(6-ethyl-1,3-benzothiazol-2-yl)-N-(furan-2-ylmethyl)piperidine-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H26ClN3O4S2
assistant