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2,3,5-Trimethyl-4-[2,3,5-trimethyl-4-[[(4R)-1,12-dioxo-3,4,5,8,9aalpha-pentamethyl-6-methoxy-7-(2,3,6-trimethyl-4-carboxy-5-methoxyphenoxycarbonyl)-4beta,4abeta-(epoxymethanoxy)-4,4a,9,9a-tetrahydro-1H-xanthene-2-yl]carbonyloxy]-6-methoxybenzoyloxy]-6-met


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