You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[3,5-bis(2,6-diphenylpyridin-4-yl)phenyl]-2-[(1Z)-buta-1,3-dienyl]-3,4,4-trimethylquinoline The above is the IUPAC name of a molecule. Write its molecular formula.
user
C56H45N3
assistant