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4-Hydroxy-5-[2-hydroxy-4-[3-hydroxy-4-[p-(4-nitro-2-sulfoanilino)phenylazo]anilino]phenylazo]-2,7-naphthalenedisulfonic acid Structure

4-Hydroxy-5-[2-hydroxy-4-[3-hydroxy-4-[p-(4-nitro-2-sulfoanilino)phenylazo]anilino]phenylazo]-2,7-naphthalenedisulfonic acid