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disodium 4-[[3,5-bis[(3-amino-4-nitrophenyl)azo]-2,4-dihydroxyphenyl]azo]-5-hydroxynaphthalene-2,7-disulphonate Structure

disodium 4-[[3,5-bis[(3-amino-4-nitrophenyl)azo]-2,4-dihydroxyphenyl]azo]-5-hydroxynaphthalene-2,7-disulphonate