Methyl 7,11-Dimethyldodeca-2,6,10-trienoate

(1R,2S,4aS,8aS)-(+)-methyl 2-hydroxy-5,5,8a-trimethyldecahydronaphthalene-1-carboxylate

7,11-dimethyl-dodeca-2c,6t,10-trienoic acid methyl ester