(2S,3aS,5aS,6R,9aR,9bS)-5a,9b-dimethyl-7-methylene-2-vinyldodecahydronaphtho[2,1-b]furan-6-carbaldehyde

3-((R)-((2S,3aS,5aS,6R,9aR,9bS)-5a,9b-dimethyl-7-methylene-2-vinyldodecahydronaphtho[2,1-b]furan-6-yl)(hydroxy)methyl)-2-methoxy-5,6-dimethyl-4H-pyran-4-one