You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-bromo-9,9-dimethylfluorene;2-bromo-9,9-diphenylfluorene;1-bromo-2-phenylbenzene;1-bromo-3-phenylbenzene;3-bromo-9-phenylcarbazole;2-bromo-9,9'-spirobi[fluorene] into its molecular formula.
user
C107H75Br6N
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