sodium S-[2-[[[4-[[1-[[(2,4-dimethoxyphenyl)amino]carbonyl]-2-oxopropyl]azo]phenyl]sulphonyl]amino]ethyl] thiosulphate

Thiosulfuric acid S-[2-[[[4-[[1-[[(2,4-dimethoxyphenyl)amino]carbonyl]-2-oxopropyl]azo]phenyl]sulfonyl]amino]ethyl]O-sodium salt