3,4-Dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoic acid 5-carboxy-2,3-dihydroxyphenyl ester;3-[3-(3,4,5-Trihydroxybenzoyloxy)-4,5-dihydroxybenzoyloxy]-4,5-dihydroxybenzoic acid;Trigallic acid
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