4-(1-(2-Hydroxybenzoyl)-6-imino-3-methyl-1,4,6,7-tetrahydropyrazolo[3,4-d][1,3]thiazin-4-yl)-1,3-benzenediol AIDS-141768 AIDS141768 NSC657996 {4H-Pyrazolo[3,4-d][1,3]thiazin-6-amine,} 4-(2,4-dihydroxy phenyl)-1-(2-hydroxyphenyl)-3-methyl-