You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[7-[[(Z)-2-(4-fluorophenyl)ethenyl]iminomethyl]-6,8a-dimethyl-1,3,4,8-tetrahydroisoquinolin-2-yl]-2,2-dimethylpropan-1-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H31FN2O
assistant