(1R,3S,4aS,6aS,12aR,12bS)-3,4a-dihydroxy-3-methyl-7,12-dioxo-1-((triisopropylsilyl)oxy)-1,2,3,4,4a,5,6,7,12,12b-decahydro-6a,12a-epoxytetraphen-8-yl acetate

(1R,3S,4aS,5aR,12bS)-3-methyl-7,12-dioxo-1-((triisopropylsilyl)oxy)-1,3,4,5a,6,7,12,12b-octahydro-2H-tetrapheno[4a,5-b]oxirene-3,8-diyl diacetate

(1R,3S,4aS,5aR,12bS)-3,8-dihydroxy-3-methyl-1-((triisopropylsilyl)oxy)-1,3,4,5a,6,12b-hexahydro-2H-tetrapheno[4a,5-b]oxirene-7,12-dione

Acetic acid (2R,3R,4R,6R)-3-acetoxy-2-methyl-6-((R)-3,5,8-trihydroxy-3-methyl-1,7,12-trioxo-1,2,3,4,7,12-hexahydro-benzo[a]anthracen-9-yl)-tetrahydro-pyran-4-yl ester

Acetic acid (2R,3R,4R,6R)-3-acetoxy-6-((R)-3-benzyloxy-5,8-dihydroxy-3-methyl-1,7,12-trioxo-1,2,3,4,7,12-hexahydro-benzo[a]anthracen-9-yl)-2-methyl-tetrahydro-pyran-4-yl ester