Synonyms: 2-Naphthaleneaceticacid, 1,2b,3,4,4a,5,6,8ab-octahydro-1b-hydroxy-4aa,8-dimethyl-a-methylene-, g-lactone (7CI);Eudesma-3,11(13)-dien-12-oic acid, 6a-hydroxy-, g-lactone (8CI); Naphtho[1,2-b]furan-2(3H)-one,3a,4,5,5a,6,7,9a,9b-octahydro-5a,9-dimethyl-3-methylene-, [3aS-(3aa,5ab,9aa,9bb)]-; (-)-a-Cyclocostunolide; a-Cyclocostunolide