1,10-Dimethyl-3-phenyl-1,10-dihydropyrazolo[3,4-b][1,5]benzodiazepin-4-yl methyl sulfide 1,10-Dimethyl-4-(methylthio)-3-phenyl-1,10-dihydropyrazolo[3,4-b][1,5]benzodiazepine AIDS-146219 AIDS146219 NSC672304