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(1R,3R,4S,13R)-4,5,12-trihydroxy-13-methyl-6,11-dioxo-1,2,3,4,6,7,8,9,10,11-decahydro-1,4-(epoxymethano)tetracen-3-yl acetate
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(1R,3R,4S,9R)-3'-[3,4-dihydroxy-5,8-dimethoxy-9-methyl-1,2,3,4-tetrahydro-1,4-(epoxymethano)naphthalen-6-yl]-3 -methoxy-4 ,5 ,6 ,7 -tetrahydro-2 -benzofuran-1 (3H)-one
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(1R,3R,4S,9R)-4-hydroxy-5,8-dimethoxy-6-(1-methoxy-3-oxo-1,3,4,5,6,7-hexahydro-2-benzofuran-1-yl)-9-methyl-1,2,3,4-tetrahydro-1,4-(epoxymethano)naphthalen-3-yl acetate
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(1R,3R,4R,9R)-6-(1-acetoxy-3-oxo-1,3,4,5,6,7-hexahydroisobenzofuran-1-yl)-4-hydroxy-5,8-dimethoxy-9-methyl-1,2,3,4-tetrahydro-1,4-(epoxymethano)naphthalen-3-yl acetate