. . "(6aR,9aS)-5-Methyl-2-[4-(trifluoromethyl)benzyl]-5,6a,7,8,9,9a-hexahydrocyclopenta[4,5]imidazo[2,1-b]purin-4(3H)-one" . . . . . . "SCH-51866" . . . . . "SCH-51866" .