AIDS-148399 AIDS148399 Butanoic acid, 2-methyl-, 5,6,7,10-tetrakis(acetyloxy)-5a-[(acetyloxy)methyl]-2-[(benzoyloxy)methyl]octahydro-9-hydroxy-2,9-dimethyl-4-oxo-2H-3,9a-methano-1-benzoxepin-8-yl ester NSC680531