You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-[3,5-bis[3-(9-phenylcarbazol-3-yl)carbazol-9-yl]phenyl]-3-(2-methoxynaphthalen-1-yl)benzo[f]quinazoline by IUPAC nomenclature, provide its molecular formula.
user
C89H56N6O
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