Acetic acid (3S,3aS,6R,7R,8R,8aS)-8-acetyl-3,6-dimethyl-2-oxo-7-vinyl-octahydro-cyclohepta[b]furan-6-yl ester

Acetic acid (3S,3aS,6R,6aS,9bS)-3,6,9-trimethyl-2-oxo-2,3,3a,5,6,6a,7,9b-octahydro-4H-1,8-dioxa-cyclopenta[e]azulen-6-yl ester

(3S,3aS,6S,9bS)-6-Hydroxy-3,6,9-trimethyl-3a,5,6,9b-tetrahydro-3H,4H-1,8-dioxa-cyclopenta[e]azulen-2-one

Acetic acid (3S,3aS,6R,7S,8R,8aS)-8-acetyl-7-methanesulfonyloxymethyl-3,6-dimethyl-2-oxo-octahydro-cyclohepta[b]furan-6-yl ester