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(3Ar,6S,7S,7aR)-4-(3-ethanimidoyl-4-hydroxy-8-methyl-2-oxochromen-7-yl)oxy-6-ethyl-7-methoxy-6-methyl-4,5,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyridin-2-one


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