You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(4-methoxy-3-nitrophenyl)methylsulfanyl]-1-[3-(methylaminomethyl)piperidin-1-yl]ethanone;hydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H26ClN3O4S
assistant