66922-25-6 9-(Acetyloxy)-7-hydroxy-10-(hydroxymethyl)-6-methyl-3-methylene-2-oxo-2,3,3a,4,7,8,9,11a-octahydrocyclodeca[b]furan-4-yl 2-methylbutanoate AIDS-031162 AIDS031162 Eurecurvin NSC292663 NSC299545