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system
Name the molecular formula for the molecule established as 2-N'-(5-phenylcyclohepta-1,4,6-trien-1-yl)-2-N,2-N,2-N'-tris(4-phenylphenyl)spiro[9H-benzo[a]azulene-10,9'-fluorene]-2,2'-diamine using the IUPAC nomenclature.
user
C75H54N2
assistant