178452-71-6 Chromate(5-), bis(6-(((4-((1-butyl-5-cyano-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-3-pyridinyl)azo)phenyl)sulfonyl)amino)-4-hydroxy-3-((2-hydroxy-5-nitro-3-sulfophenyl)azo)-2-naphthalenesulfonato(4-))-, pentasodium