Trisodium-(4′-(8-acetylamino-3,6-disulfonato-2-naphthylazo)-4″-(6-benzoylamino-3-sulfonato-2-naphthylazo)biphenyl-1,3′,3″, 1‴-tetraolato-O, O′, O″, O‴)copper(II)
(4′-(8-acétylamino-3,6-disulfonato-2-naphthylazo)-4″-(6-benzoylamino-3-sulfonato-2-naphthylazo)biphényl-1,3′,3″, 1‴-tétraolato-O, O′, O″, O‴)cuivre(II) de trisodium