You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[2-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)ethyl]-4-(2-methoxyphenyl)-N'-methylpiperazine-1-carboximidamide by IUPAC nomenclature, provide its molecular formula.
user
C22H31N5OS
assistant