1-(2-(4-(Hydroxy(oxido)amino)phenyl)-2-oxoethyl)-3-isobutyl-2-methyl-3H-1.lambda.~5~-naphtho[2,3-d]imidazole-4,9-dione AIDS-125693 AIDS125693 NSC80467 {1H-Naphth[2,3-d]imidazolium,} 4, 9-dihydro-3-isobutyl-2-methyl-1-(p-nitrophenacyl)-4,9-dioxo- bromide {1H-Naphth[2,3-d]imidazolium,} 4, {9-dihydro-2-methyl-1-(2-methylpropyl)-3-[2-(4-nitrophenyl)-2-oxoet} hyl\]-4,9-dioxo-, bromide