5-[[4-氯-6-[[4-[[4-氯-6-[(3-磺基苯基)氨基]-1,3,5-三嗪-2-基]氨基]-2-磺基苯基]氨基]-1,3,5-三嗪-2-基]氨基]-4-羟基-3-[(2-磺基苯基)偶氮]-2,7-萘二磺酸五钠盐
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