disodium 6-amino-4-hydroxy-5-[[4-[[[(4-methylcyclohexyl)oxy]carbonyl]amino]-2-sulphonatophenyl]azo]naphthalene-2-sulphonate;6-Amino-4-hydroxy-5-[[4-[[[(4-methylcyclohexyl)oxy]carbonyl]amino]-2-sulfophenyl]azo]-2-naphthalenesulfonic acid disodium salt