(3R,3aS,8aR)-3-hydroxy-3,5,5,8-tetramethyl-2,3,3a,4,5,8a-hexahydroazulen-6(1H)-one

(1R,3aR,6R,8aS)-1,4,7,7-tetramethyl-1,2,3,3a,6,7,8,8a-octahydroazulene-1,6-diol

(+)-omphadiol