You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-(4-chlorophenyl)-4-(cyanomethyl)pyrazol-3-yl]-2-(4-cyanophenyl)-2-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H21ClN6OS
assistant