Synonyms: 1H-3a,6-Epoxyazulen-2(3H)-one,4,5,6b,7,8,8ab-hexahydro-5a-isopropenyl-3b,8a-dimethyl- (7CI); 1H-3a,6-Epoxyazulen-2(3H)-one,hexahydro-3,8-dimethyl-5-(1-methylethenyl)-, [3S-(3a,3ab,5b,6b,8b,8aa)]-; 4bH,5b-Guai-11-en-3-one, 5,8b-epoxy- (8CI); 1-Epiallotorilolone, anhydro-; Anhydro-1-epiallotorilolone