You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 4,5-bis[2,7-bis(6-phenylpyridin-2-yl)carbazol-9-yl]-2-[2-(trifluoromethyl)phenyl]benzonitrile ?
user
C82H50F3N7
assistant