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4-[[4-(3,6-Disulfo-1-naphthalenylazo)-1-naphthalenyl]azo]-3-hydroxy-2,7-naphthalenedisulfonic acid Structure

4-[[4-(3,6-Disulfo-1-naphthalenylazo)-1-naphthalenyl]azo]-3-hydroxy-2,7-naphthalenedisulfonic acid