trisodium 2-[[4-chloro-6-morpholino-1,3,5-triazin-2-yl]amino]-5-[[1-(2-chloro-5-sulphonatophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]benzene-1,4-disulphonate

2-[[4-Chloro-6-(4-morpholinyl)-1,3,5-triazin-2-yl]amino]-5-[[[1-(2-chloro-5-sulfophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol]-4-yl]azo]-1,4-benzenedisulfonic acid trisodium salt