(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

1'-[(1S,2R)-7-bromo-1,2-dihydroxy-5,8-dimethoxy-1,2,3,4-tetrahydronaphthalen-1-yl]ethanone

2-((3aR,5R,9bR,10R)-6,9-dimethoxy-2,2,10-trimethyl-3a,4-dihydro-5H-5,9b-(epoxymethano)naphtho[1,2-d][1,3]dioxole-8-carbonyl)cyclohex-1-ene-1-carboxylic acid

3-((3aR,5R,9bR,10R)-6,9-dimethoxy-2,2,10-trimethyl-3a,4-dihydro-5H-5,9b-(epoxymethano)naphtho[1,2-d][1,3]dioxol-8-yl)-3-hydroxy-4,5,6,7-tetrahydroisobenzofuran-1(3H)-one