2-[[5-carbamoyl-1-ethyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-3-pyridyl]azo]-4-[(2,3-dibromo-1-oxopropyl)amino]benzenesulphonic acid

2-[[(5-Aminocarbonyl-1-ethyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxopyridin)-3-yl]azo]-4-[(2,3-dibromo-1-oxopropyl)amino]benzenesulfonic acid