(3aS,3bR,4R,6aS,7S)-(+)-3,3a,3b,4,5,6,6a,7-Octahydro-4,7-dihydroxy-3a,5,5-trimethyl-3-methylen-2H-cyclopentapentalen-2-on

(1R,2R,7S,8S,11R)-7,11-diacetoxy-2,10,10-trimethyl-3-methylenetricyclo<6,3,0,02,6>undec-5-en-4-one

(3aR,3bS,4S,6aR,7R)-3,3a,5,5-Tetramethyl-3-phenylselanyl-4,7-bis-(tetrahydro-pyran-2-yloxy)-3,3a,3b,4,5,6,6a,7-octahydro-cyclopenta[a]pentalen-2-one