You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-[3-[4-[3-[2,6-bis(3-carbazol-9-ylphenyl)pyridin-4-yl]phenyl]-6-(3-carbazol-9-ylphenyl)pyridin-2-yl]phenyl]carbazole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C88H56N6
assistant