5-[[4-[(2-bromo-1-oxoallyl)amino]benzoyl]amino]-3-[[5-[(2-bromo-1-oxoallyl)amino]-2-sulphophenyl]azo]-4-hydroxynaphthalene-2,7-disulphonic acid

5-[[4-[(2-Bromo-1-oxo-2-propenyl)amino]benzoyl]amino]-3-[[5-[(2-bromo-1-oxo-2-propenyl)amino]-2-sulfophenyl]azo]-4-hydroxy-2,7-naphthalenedisulfonic acid