1-(m-Aminophenyl)-4-((m-(p-((1-(m-aminophenyl)-3-carboxy-5-oxo-2-pyrazolin-4-yl)azo)benzamido)phenyl)azo)-5-oxo-2-pyrazoline-3-carboxylic acid, disodium salt 1H-Pyrazole-3-carboxylic acid, 1-(3-aminophenyl)-4-((3-((4-((1-(3-aminophenyl)-3-carboxy-4,5-dihydro-5-oxo-1H-pyrazol-4-yl)azo)benzoyl)amino)phenyl)azo)-4,5-dihydro-5-oxo-, disodium salt 71550-29-3