5945-40-4 AZULENO(6,5-b)FURAN-2,5-DIONE, 3,3a,4,4a,7a,8,9,9a-OCTAHYDRO-8-METHYL-3-METHYLEN Azuleno(6,5-b)furan-2,5-dione, 3,3a,4,4a,7a,8,9,9a-octahydro-8-methyl-3-methylene-, (3aR-(3a-alpha,4a-alpha,7a-alpha,8-alpha,9a-alpha)) Mexicanin E Mexicanine E NSC 264054