Synonyms: Cuprate(4-),[m-[[7,7'-[[6-[(2-hydroxyethyl)amino]-1,3,5-triazine-2,4-diyl]diimino]bis[4-(hydroxy-kO)-3-[[2-(hydroxy-kO)-5-sulfophenyl]azo-kN1]-2-naphthalenesulfonato]](8-)]]di-,tetrasodium (9CI); Cuprate(4-), [m-[[7,7'-[[6-[(2-hydroxyethyl)amino]-1,3,5-triazine-2,4-diyl]diimino]bis[4-hydroxy-3-[(2-hydroxy-5-sulfophenyl)azo]-2-naphthalenesulfonato]](8-)]]di-,tetrasodium; 2-Naphthalenesulfonic acid,7,7'-[[6-[(2-hydroxyethyl)amino]-1,3,5-triazine-2,4-diyl]diimino]bis[4-hydroxy-3-[(2-hydroxy-5-sulfophenyl)azo]-,copper complex