1,2,3-Benzothiadiazin-4-amine, {N-[4-nitrophenyl)methyl]-,} S, S-dioxide 4-((4-(Hydroxy(oxido)amino)benzyl)amino)-1.lambda.~4~,2,3-benzothiadiazin-1-ol 1-oxide AIDS-138625 AIDS138625 NSC645789