You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[3-(5-chlorothiophen-2-yl)propanoyl]-N-(pyridin-3-ylmethyl)piperidine-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H22ClN3O2S
assistant