2-((2E)-2-{2-[(2,4-Dimethoxyphenyl)amino]-1-[(3-hydroxy-6-nitro-3,4-dihydroquinoxalin-2-yl)methyl]-2-oxoethylidene}hydrazino)-N,N,N-trimethyl-2-oxoethanaminium chloride AIDS-016032 AIDS016032 NSC649806