73287-45-3 Chromate(2-), (2,4-dihydro-4-((2-(hydroxy-kappaO)-5-nitrophenyl)azo-kappaN1)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-kappaO3)(2-(hydroxy-kappaO)-3-((2-(hydroxy-kappaO)-1-naphthalenyl)azo-kappaN1)-5-nitrobenzenesulfonato(3-))-, dihydrogen