4-[4-[6-[4-(4-Carboxy-3-methoxy-2,5,6-trimethylphenoxy)carbonyl-3-methoxy-2,5,6-trimethylphenoxy]carbonyl-4-oxopyran-2-carbonyl]oxy-2-methoxy-3,5,6-trimethylbenzoyl]oxy-2-methoxy-3,5,6-trimethylbenzoic acid


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