disodium 7-[[[6-[(2-chloroethyl)sulphonyl]bicyclo[2.2.1]hept-2-yl]carbonyl]amino]-4-hydroxy-3-[(4-methyl-2-sulphonatophenyl)azo]naphthalene-2-sulphonate

7-[[[6-[(2-Chloroethyl)sulfonyl]bicyclo[2.2.1]heptan-2-yl]carbonyl]amino]-4-hydroxy-3-[(4-methyl-2-sodiosulfophenyl)azo]-2-naphthalenesulfonic acid sodium salt