trisodium 7-[[2-[(aminocarbonyl)amino]-4-[[4-chloro-6-(1-methylethoxy)-1,3,5-triazin-2-yl]amino]phenyl]azo]naphthalene-1,3,6-trisulphonate

7-[2-(Aminocarbonylamino)-4-[4-chloro-6-(1-methylethoxy)-1,3,5-triazin-2-ylamino]phenylazo]-1,3,6-naphthalenetrisulfonic acid trisodium salt