You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-[11-(9,9-dimethylfluoren-2-yl)benzo[a]carbazol-8-yl]-1-N,1-N,3-N-triphenyl-3-N-(9-phenylcarbazol-3-yl)benzene-1,3-diamine by IUPAC nomenclature, provide its molecular formula.
user
C73H52N4
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