1 4N3 N-octanoyl-D-valine 1.000 2 1K4 N-decanoyl-L-homoserine 0.800 3 C6L N-hexanoyl-L-homoserine 0.778 4 CYK N-hexanoyl-L-homocysteine 0.778 5 REZ (2r)-2-amino-7-{[(1r)-1-carboxyethyl]amino}-7-oxoheptanoic acid 0.700