2-(6-Chloro-3-imino-2,3-dihydro-1H-pyrazolo[3,4-b]quinoxalin-1-yl)-N,N-diethylethanamine AIDS-161523 AIDS161523 N-(2-(6-Chloro-3-imino-2,3-dihydro-1H-pyrazolo[3,4-b]quinoxalin-1-yl)ethyl)-N,N-diethylamine NSC697710