1,4-Methano-s-indacene-3a(1H)-carboxylic acid, 4-formyl-8a-[[[(2R,6S,7R)-hexahydro-6-methoxy-7-methyl-4-(2-methyl-2-propenyl)-1,4-oxazepin-2-yl]oxy]methyl]-4,4a,5,6,7,7a,8,8a-octahydro-7-methyl-3-(1-methylethyl)-, (3aR,4aR,7R,7aR)- AIDS-153990 AIDS153990 RS-135853