AIDS-013876 AIDS013876 Dimethyl 2-{(2E)-2-[2-(aminocarbonothioyl)hydrazino]-2-[(2,6-dimethylphenyl)imino]ethyl}-6-{(2E)-2-[(aminocarbonothioyl)hydrazono]-3-[(2,6-dimethylphenyl)amino]-3-oxopropyl}pyridine-3,5-dicarboxylate NSC658281