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4-[4-[7-(4-carboxy-3-methoxy-2,5,6-trimethylphenoxy)carbonyl-4,4a-dihydroxy-6-methoxy-3,4,5,8,9a-pentamethyl-1-oxo-9H-xanthene-2-carbonyl]oxy-2-methoxy-3,5,6-trimethylbenzoyl]oxy-2-methoxy-3,5,6-trimethylbenzoic acid
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