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(3Ar,4R,7R,7aR)-4-(3-amino-4-hydroxy-8-methyl-2-oxochromen-7-yl)oxy-7-methoxyspiro[3a,4,7,7a-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6,1'-cyclopentane]-2-one


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