rac-(4aR,4bS,5S,7aR,7bR)-4,4a,6,6-tetramethyldecahydrocyclopenta[2,3]pentaleno[1,2-b]oxirene-3,5-diol

(3aS,3bR,4R,6aR)-3,3a,5,5-Tetramethyl-2,3,3a,3b,4,5,6,6a-octahydro-1H-cyclopenta[a]pentalene-2,4-diol

(3aR,3bS,7aR)-5-Hydroxy-2,2,3b,4-tetramethyl-1,2,3a,3b,4,5,6,7a-octahydro-cyclopenta[a]pentalen-3-one