86242-88-8 Cuprate(4-), bis(2-(amino-kappaN)ethanol-kappaO)(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