Azuleno[6,5-b]furan-2,5-dione,4-(acetyloxy)-3,3a,4,4a,7a,8,9,9a-octahydro-4a,8-dimethyl-3-methylene-,(3aR,4S,4aR,7aR,8R,9aR)-; NSC 166124;Azuleno[6,5-b]furan-2,5-dione,4-(acetyloxy)-3,3a,4,4a,7a,8,9,9a-octahydro-4a,8-dimethyl-3-methylene-,[3aR-(3aa,4a,4ab,7aa,8a,9aa)]-;Ambrosa-2,11(13)-dien-12-oicacid, 6a,8b-dihydroxy-4-oxo-, 12,8-lactone, acetate (8CI); Angustibalin; Helenalin, acetate (7CI); 6-O-Acetylhelenalin; 

helenalin methacrylate;