1-(4-Chlorobenzoyl)-4-(3,4-dimethoxyphenyl)-3-methyl-4,7-dihydropyrazolo[3,4-d][1,3]thiazin-6(1H)-imine AIDS-141751 AIDS141751 NSC657974 {4H-Pyrazolo[3,4-d][1,3]thiazin-6-amine,} 1-(4-chlorobenzoyl)- 4-(3, 4-dimethoxyphenyl)-3-methyl-