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system
Please write the molecular formula of the molecule N-(9,9-diphenylfluoren-2-yl)-N-(3,4-diphenylphenyl)-9,9-diphenylfluoren-2-amine;N-(9,9-diphenylfluoren-2-yl)-9,9-diphenyl-N-[2-(4-phenylphenyl)phenyl]fluoren-2-amine;N-(9,9-diphenylfluoren-2-yl)-9,9-diphenyl-N-[3-(2-phenylphenyl)phenyl]fluoren-2-amine .
user
C204H141N3
assistant