5-[(3aS,4S,5S,6aR)-5-Hydroxy-4-((E)-3-hydroxy-oct-1-enyl)-1,3a,4,5,6,6a-hexahydro-pentalen-2-yl]-pentanoic acid methyl ester

7-endo-hydroxybicyclo<3.3.0>oct-8-en-2-one

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