93606-19-0 Chromate(2-), (3-(hydroxy-kappaO)-4-((2-(hydroxy-kappaO)-1-naphthalenyl)azo-kappaN1)-7-nitro-1-naphthalenesulfonato(3-))(N-(7-hydroxy-8-((2-(hydroxy-kappaO)-5-nitrophenyl)azo-kappaN1)-1-naphthalenyl)acetamidato(2-))-, sodium hydrogen