72845-56-8 Chromate(2-), (3-((2-(amino-kappaN)-4-aminophenyl)azo-kappaN1)-4-(hydroxy-kappaO)benzenesulfonato(3-))(1-((2-(hydroxy-kappaO)-4-nitrophenyl)azo-kappaN1)-2-naphthalenolato(2-)-kappaO)-, dihydrogen