You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 6,12-bis(2-chlorophenyl)-3,9-bis(3,5-ditert-butylphenyl)-5,11-dihydroindeno[1,2-b]carbazole into molecular formula.
user
C59H59Cl2N
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