1-(2-{(2Z)-2-[2-[(3-Chloro-1,4-dioxo-1,4-dihydronaphthalen-2-yl)amino]-1-(4,7-dihydroxy-2-oxo-2H-chromen-3-yl)-2-oxoethylidene]hydrazino}-2-oxoethyl)pyridinium chloride AIDS-015431 AIDS015431 NSC649826