73513-81-2

Cuprate(5-), [4-[[8-hydroxy-7-[[2-hydroxy-4-[[3-sulfo-4-[2-[2-sulfo-4-[[4-[(4-sulfophenyl)azo]phenyl]-ONN-azoxy]phenyl]ethenyl]phenyl]-NNO-azoxy]phenyl]azo]-6-sulfo-2-naphthalenyl]amino]benzoato(7-)]-, tetrasodium hydrogen