1-(4-Chlorobenzoyl)-4-(2-(hydroxy(oxido)amino)phenyl)-6-imino-3-methyl-1,4,6,7-tetrahydropyrazolo[3,4-d][1,3]thiazine AIDS-141748 AIDS141748 NSC657971 {4H-Pyrazolo[3,4-d][1,3]thiazin-6-amine,} 1-(4-chlorobenzoyl- 3-methyl-4-(2-nitrophenyl)-