You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)-2-[4-(4-ethylpiperazin-1-yl)-2-methylanilino]propan-1-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H32N4OS
assistant