Cuprate(4-), (mu-(7-(benzoylamino)-3-((3,3'-di(hydroxy-kappaO)-4'-((1-(hydroxy-kappaO)-4,8-disulfo-2-naphthalenyl)azo-kappaN1)(1,1'-biphenyl)-4-yl)azo-kappaN1)-4-(hydroxy-kappaO)-1,5-naphthalenedisulfonato(8-)))di-, tetrasodium;Cuprate(4-), (mu-(7-(benzoylamino)-3-((3,3'-dihydroxy-4'-((1-hydroxy-4,8-disulfo-2-naphthalenyl)azo)(1,1'-biphenyl)-4-yl)azo)-4-hydroxy-1,5-naphthalenedisulfonato(8-)))di-, tetrasodium;Cuprate(4-), (mu-(7-(benzoylamino)-3-(2-(3,3'-di(hydroxy-kappaO)-4'-(2-(1-(hydroxy-kappaO)-4,8-disulfo-2-naphthalenyl)diazenyl-kappaN1)(1,1'-biphenyl)-4-yl)diazenyl-kappaN1)-4-(hydroxy-kappaO)-1,5-naphthalenedisulfonato(8-)))di-, sodium (1:4);Tetrasodium (mu-(7-benzamido-3-((3,3'-dihydroxy-4'-((1-hydroxy-4,8-disulpho-2-naphthyl)azo)(1,1'-biphenyl)-4-yl)azo)-4-hydroxynaphthalene-1,5-disulphonato(8-)))dicuprate(4-);copper(2+) sodium 7-(benzoylamino)-3-[(E)-{3,3'-dioxido-4'-[(E)-(1-oxido-4,8-disulfonatonaphthalen-2-yl)diazenyl]biphenyl-4-yl}diazenyl]-4-oxidonaphthalene-1,5-disulfonate (2:4:1)