72845-54-6 Chromate(2-), (3-((2-(amino-kappaN)-4-aminophenyl)azo-kappaN1)-4-(hydroxy-kappaO)benzenesulfonato(3-))(2,4-dihydro-4-((2-(hydroxy-kappaO)-5-nitrophenyl)azo-kappaN1)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-kappaO3)-, dihydrogen