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[4-[[7-[[(4R,7R,7As)-7-methoxy-6,6-dimethyl-2-oxo-3a,4,7,7a-tetrahydro-[1,3]dioxolo[4,5-c]pyran-4-yl]oxy]-8-methyl-2-oxochromen-3-yl]carbamoyl]-2-(3-methylbut-2-enyl)phenyl] acetate


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