trisodium 4-hydroxy-5-[[4-(methylamino)-6-[[3-[(2,5,6-trichloro-4-pyrimidinyl)amino]phenyl]amino]-1,3,5-triazin-2-yl]amino]-3-[(2-sulphonatophenyl)azo]naphthalene-2,7-disulphonate

4-Hydroxy-5-[[4-(methylamino)-6-[[3-[(2,5,6-trichloro-4-pyrimidinyl)amino]phenyl]amino]-1,3,5-triazin-2-yl]amino]-3-[(2-sulfophenyl)azo]-2,7-naphthalenedisulfonic acid trisodium salt

2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-[[4-(methylamino)-6-[[3-[(2,5,6-trichloro-4-pyrimidinyl)amino]phenyl]amino]-1,3,5-triazin-2-yl]amino]-3-[(2-sulfophenyl)azo]-, trisodium salt