1H-Pyrazole-3-carboxylic acid,4-((4-((4-((3-carboxy-4,5-Dihydro-1-(3-nitrophenyl)-5-oxo-1H-pyrazol-4-yl)azo)benzoyl)amino)phenyl)azo)-4,5-d ihydro-1-(3-nitrophenyl)-5-oxo-,disodium salt
1H-Pyrazole-3-carboxylic acid,4-((4-((4-((3-carboxy-4,5-Dihydro-1-(3-nitrophenyl)-5-oxo-1H-pyrazol-4-yl)azo)benzoyl)amino)phenyl)azo)-4,5-d ihydro-1-(3-nitrophenyl)-5-oxo-,disodium salt