(3aS,4R,6aS)-4-((S)-5-methoxyheptyl)-5',5'-dimethylhexahydro-1H-spiro[pentalene-2,2'-[1,3]dioxane]

(3aS,4S,6aS)-4-((S)-5-methoxyheptyl)-5',5'-dimethylhexahydro-1H-spiro[pentalene-2,2'-[1,3]dioxane]

(3aS,4S,6aS)-4-((R)-5-methoxyheptyl)-5',5'-dimethylhexahydro-1H-spiro[pentalene-2,2'-[1,3]dioxane]

(3aR,4S,5S,6aS)-4-((S)-5-methoxyheptyl)-5',5'-dimethylhexahydro-1H-spiro[pentalene-2,2'-[1,3]dioxan]-5-ol

methyl (3aR,4R,6aS)-4-((S)-5-methoxyheptyl)-5',5'-dimethyl-5-oxohexahydro-1H-spiro[pentalene-2,2'-[1,3]dioxane]-4-carboxylate