1 U3X 4-[(cyclohexylmethyl)amino]-L-phenylalanine 1.000 2 M84 3-{4-[(phenylcarbonyl)amino]phenyl}propanoic acid 0.905 3 TIL [2-[5-carboxyethyl-2-phenolato(nitrilomethylidyne)][phenolato]]chromium(III) 0.826 4 2LQ 4-{[(1r,4e)-cyclooct-4-en-1-ylcarbonyl]amino}-L-phenylalanine 0.792 5 GKN 3-[4-[(4-~{tert}-butylphenyl)carbonylamino]phenyl]propanoic acid 0.760 6 WPT 3-(4-{[(3-phenoxyphenyl)methyl]amino}phenyl)propanoic acid 0.704