You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N'-[3-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)-3-oxopropyl]-N-ethyl-4-pyrimidin-2-ylpiperazine-1-carboximidamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H29N7OS
assistant