8H-Pyrimido[4,5-e][1,2,4]triazolo[1,2-a][1,2,4]triazine-1,3,8,10(2H,4H,9H)-tetrone, 6-[(4-chlorophenyl)amino]-2,4-dimethyl-9-phenyl- AIDS-051054 AIDS051054 NSC681099