You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[5-[2-(4-cyanophenyl)carbazol-9-yl]-2-[2-(4-isocyanophenyl)carbazol-9-yl]-4-(trifluoromethyl)phenyl]benzonitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C52H28F3N5
assistant