8-(Acetyloxy)-6-methyl-3,9-dimethylene-2-oxo-2,3,3a,4,6a,7,8,9,9a,9b-decahydroazuleno[4,5-b]furan-4-yl 2,3-bis(acetyloxy)-2-methylbutanoate AIDS-144428 AIDS144428 NSC666859