Synonyms: Cuprate(3-), (mu-(4-(2-(3,3'-di(hydroxy-kappaO)-4'-(2-(2-(hydroxy-kappaO)-6-sulfo-1-naphthalenyl)diazenyl-kappaN1)(1,1'-biphenyl)-4-yl)diazenyl-kappaN1)-3-(hydroxy-kappaO)-2,7-naphthalenedisulfonato(7-)))di-, hydrogen, compd. with 2,2'-iminobis(ethanol) (1:3:3);Cuprate(3-), (mu-(4-((3,3'-dihydroxy-4'-((2-hydroxy-6-sulfo-1-naphthalenyl)azo)(1,1'-biphenyl)-4-yl)azo)-3-hydroxy-2,7-naphthalenedisulfonato(7-)))di-, trihydrogen, compd. with 2,2'-iminobis(ethanol) (1:3);copper(2+) hydrogen 4-[(E)-{3,3'-dioxido-4'-[(2-oxido-6-sulfonatonaphthalen-1-yl)diazenyl]biphenyl-4-yl}diazenyl]-3-oxidonaphthalene-2,7-disulfonate - 2,2'-iminodiethanol (2:3:1:3)