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system
Can you give the molecular formula of the molecule 4,4'-dimethyl-9,9'-spirobi[fluorene];1-methyl-9-(4-methylphenyl)carbazole;3-methyl-9-(2-methylphenyl)carbazole;3-methyl-9-(3-methylphenyl)carbazole;3-methyl-9-(4-methylphenyl)carbazole;4-methyl-9-(4-methylphenyl)carbazole ?
user
C127H105N5
assistant