Synonyms: Cuprate(1-), (3-(2-(3-(2-(4-(((4-(2-(2-amino-4-hydroxyphenyl)diazenyl)phenyl)amino)carbonyl)phenyl)diazenyl)-2-(hydroxy-kappaO)-4-hydroxyphenyl)diazenyl-kappaN1)-4-(hydroxy-kappaO)benzenesulfonato(3-))-, hydrogen (1:1);Copper, (3-((3-((4-(((4-((2-amino-4-hydroxyphenyl)azo)phenyl)amino)carbonyl)phenyl)azo)-2,4-dihydroxyphenyl)azo)-4-hydroxybenzenesulfonato(2-))-;Cuprate(1-), (3-((3-((4-(((4-((2-amino-4-hydroxyphenyl)azo)phenyl)amino)carbonyl)phenyl)azo)-2-(hydroxy-kappaO)-4-hydroxyphenyl)azo-kappaN1)-4-(hydroxy-kappaO)benzenesulfonato(3-))-, hydrogen;Hydrogen (3-((3-((4-(((4-((2-amino-4-hydroxyphenyl)azo)phenyl)amino)carbonyl)phenyl)azo)-2,4-dihydroxyphenyl)azo)-4-hydroxybenzenesulphonato(3-))cuprate(1-);copper(2+) hydrogen 3-{(E)-[(3Z)-3-{2-[4-({4-[(2E)-2-(2-amino-4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl]phenyl}carbamoyl)phenyl]hydrazinylidene}-2-oxido-4-oxocyclohexa-1,5-dien-1-yl]diazenyl}-4-oxidobenzenesulfonate (1:1:1)