You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-benzo[a]carbazol-11-yl-5-[5-(4-dibenzofuran-3-ylquinazolin-2-yl)naphthalen-1-yl]benzo[b]carbazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C62H36N4O
assistant