73507-19-4

Tetrasodium (2-((1-hydroxy-3-sulpho-6-((3-sulpho-4-(2-(2-sulpho-4-((4-((4-sulphophenyl)azo)phenyl)-ONN-azoxy)phenyl)vinyl)phenyl)-NNO-azoxy)-2-naphthyl)azo)benzoato(6-))cuprate(4-)