3-Hydroxy-4,4,7,7a-tetramethyl-11-(1-methyl-2-oxo-3-pentenyl)-1,2,3,4,4a,5,6,7,7a,8-decahydrobenzo[d]xanthene-9,12-dione AIDS-133597 AIDS133597 NSC629662 Podosporin A {Benzo[d]xanthen-9,12-dione,} 1,2,3,4,4a,5,6,7,7a, 8-decahyd ro-3-hydroxy-4,4,7, 7a-tetramethyl-10-(1-methyl-2-oxo-3-pent enyl)-, {[3S-[3.alpha.,} 4a.alpha.,4a.beta.,7.alpha.,7a.alpha.,10(1R*,3E),13aS*\]\]-