Synonyms: 6H-4,7-Methenofuro[3,2-c]oxacycloundecin-6-one,12-(acetyloxy)-4,8,9,12-tetrahydro-3,11-dimethyl-, [4R-(4R*,10E,12R*)]-;Germacra-1(10),4,7,11-tetraen-15-oic acid, 8,12-epoxy-6a,9b-dihydroxy-, g-lactone, acetate, (?,E)-(+)- (8CI); Litsealactone