Anthrachinon 6, 4,8-diamino-1,5-dihydroxy-3-(4'-hydroxyphenyl)anthraquinone, 1,5-Diamino-4,8-dihydroxy-2-(4-hydroxyphenyl)anthraquinone, 1,5-dihydroxy-4,8-diamino-7-p-hydroxyphenylanthraquinone, 1,5-Diamino-4,8-dihydroxy-2-(4-hydroxy-phenyl)-anthraquinone,
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