4,4'-[(6-Chloro-1,3,5-tiazine-2,4-diyl)diimino]bis[5-hydroxy-6-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-2,7-naphthalenedisulfonic acid hexasodium salt
4,4'-[(6-Chloro-1,3,5-tiazine-2,4-diyl)diimino]bis[5-hydroxy-6-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-2,7-naphthalenedisulfonic acid hexasodium salt