7-[4-[(4-Amino-6-chloro-1,3,5-triazine-2-yl)amino]-2-(aminocarbonylamino)phenylazo]naphthalene-1,3,6-trisulfonic acid

7-[[2-[(Aminocarbonyl)amino]-4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]phenyl]azo]-1,3,6-naphthalenetrisulfonic acid