Complicatic acid

Dehydrohirsutic acid

(-)-Complicatic acid

(2S,3aα,7aα)-2,3bβ-Dimethyl-4-methylene-5-oxo-6β,6aβ-epoxydecahydro-1H-cyclopenta[a]pentalene-2α-carboxylic acid

(1S,3bβ,6aβ)-2-Oxo-3-methylene-3aα,5-dimethyl-1α,7aα-epoxydecahydro-1H-cyclopenta[a]pentalene-5β-carboxylic acid

(1aS,3bR,6aR,7aS)-Decahydro-3aα,5α-dimethyl-3-methylene-2-oxocyclopenta[4,5]pentaleno[1,6a-b]oxirene-5-carboxylic acid