You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (5-chloro-4-methoxythiophen-3-yl)-[4-[1-(2-thiophen-3-ylethyl)imidazol-2-yl]piperidin-1-yl]methanone .
user
C20H22ClN3O2S2
assistant