You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-(6-dibenzofuran-4-yl-9-triphenylen-2-ylcarbazol-3-yl)phenyl]-N-phenyldibenzofuran-1-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C66H40N2O2
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