3-Methyl-2,3,4,4a-tetrahydro-1H-pyrazino[1,2-a]quinoline-5,5(6H)-dicarbonitrile AIDS-132993 AIDS132993 NSC627967 {1H-Pyrazino[1,2-a]quinoline-5,5-dicarbonitrile,} 2,3,4,4a,5, 6-hexahydro-3-methyl-