4,6-epoxy-6-epideacetyllaurenobiolide AIDS-114268 AIDS114268 Oxireno[4,5]cyclodeca[1,2-b]furan-8(1aH)-one, 2,3,6,6a,9,9a,10,10a-octahydro-10-hydroxy-5-methyl-9-methylene-, (6aR,9aS,10R)-