You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 9-[2-[4-(9,9-dimethylfluoren-4-yl)-6-phenyl-1,3,5-triazin-2-yl]-4-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl]carbazole by IUPAC nomenclature, provide its molecular formula.
user
C57H39N7
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