3,4a,8,8a-tetrahydro-5,8a,7-trimethyl-1,6-dioxo-Δ4a,5-octalin

(5aR,9aR)-6,9a-Dimethyl-4,5,5a,8,9,9a-hexahydro-1H-naphtho[1,2-c]furan-3-one

(4aS,8aS)-2-(Bis-methylsulfanyl-methylene)-5,8a-dimethyl-3,4,4a,7,8,8a-hexahydro-2H-naphthalen-1-one