73003-95-9 Chromate(3-), (2,4-dihydro-4-((2-hydroxy-4-nitrophenyl)azo)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-))(3-hydroxy-4-((2-hydroxy-8-sulfo-1-naphthalenyl)azo)-1-naphthalenesulfonato(3-))-, trihydrogen