(+?)-Dauca-4(11),8-diene (3aS,8aS)-3-isopropylidene-6,8a-dimethyl-1,2,3,3a,4,5,8,8a-octahydroazulene (3aS,8aS)-6,8a-dimethyl-3-(1-methylethylidene)-1,2,3,3a,4,5,8,8a-octahydroazulene 3-Isopropylidene-6,8a-dimethyl-1,2,3,3a,4,5,8,8a-octahydro-azulene InChI=1/C15H24/c1-11(2)13-8-10-15(4)9-7-12(3)5-6-14(13)15/h7,14H,5-6,8-10H2,1-4H3/t14-,15-/m1/s azulene, 1,2,3,3a,4,7,8,8a-octahydro-3a,6-dimethyl-1-(1-methylethylidene)-, (3aS,8aS)-