1,4-Methano-s-indacene-3a(1H)-carboxylic acid, 4-formyl-4,4a,5,6,7,7a,8,8a-octahydro-8a-(hydroxymethyl)-7-methyl-3-(1-methylethyl)-,(1R,3aR,4S,4aR,7R,7aR,8aS)- 51493-69-7 AIDS-107824 AIDS107824 Sordaricin