You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(Z)-but-2-ene;N-[4-[9-[3-[4-(7,8-dihydroisoquinolin-1-yl)phenyl]phenyl]fluoren-9-yl]phenyl]-N-(4-methoxyphenyl)naphthalen-1-amine;ethane The above is the IUPAC name of a molecule. Write its molecular formula.
user
C63H56N2O
assistant