Chromate(2-), (2-((4,5-dihydro-3-methyl-5-oxo-1-(4-((1-oxo-2-propenyl)amino)phenyl)-1H-pyrazol-4-yl)azo)-5-nitrobenzoato(2-))(2-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-4-sulfobenzoato(3-))-, dihydrogen