1,3-Dimethyl-2,4,4a,6,7,8,9,10a-octahydro-2, {4-dioxo-benzo[g]quinazoline} 1,3-Dimethyl-4a,6,7,8,9,10a-hexahydrobenzo[g]quinazoline-2,4(1H,3H)-dione AIDS-145982 AIDS145982 NSC671904