2-Naphthalenecarboxamide,N-(2,3-dichlorophenyl)-4-[[7-[[4-[[3-[[(2,3-dichlorophenyl)amino]carbonyl]-2-hydroxy-1-naphthalenyl]azo]-3-methylphenyl]azo]-9-oxo-9H-fluoren-2-yl]azo]-3-hydroxy-
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