1-(4-Chlorobenzoyl)-3-methyl-4-(3,4,5-trimethoxyphenyl)-4,7-dihydropyrazolo[3,4-d][1,3]thiazin-6(1H)-imine AIDS-141753 AIDS141753 NSC657976 {4H-Pyrazolo[3,4-d][1,3]thiazin-6-amine,} 1-(4-chlorobenzoyl)- 3-methyl-4-(3,4,5-trimethoxyphenyl)-