6754-13-8 Ambrosa-2,11(13)-dien-12-oic acid, 6.alpha.,8.beta.-dihydroxy-4-oxo-, 12,8-lactone Azuleno[6,5-b]furan-2,5-dione, 3,3a,4,4a,7a,8,9,9a-octahydro-4-hydroxy-4a,8-dimethyl-3-methylene-, [3aS-(3a.alpha.,4.alpha.,4a.beta.,7a.alpha.,8.alpha.,9a.alpha.)]- HELENALIN NSC85236 PF 56 WLN: T C575 DYVO MV KUTJ A1 BQ DU1 I1