4-{(3-Nitrophenyl)[(2E)-3-phenylprop-2-en-1-yl]amino}-2,4-dioxobutanoic acid - 2,4-dioxo-4-{phenyl[(2E)-3-phenylprop-2-en-1-yl]amino}butanoic acid (1:1) AIDS-168006 AIDS168006