1 JEG Trans-1-aminocyclobutane-1,3-dicarboxylic acid 1.000 2 52A (2r,4r)-4-aminopyrrolidine-2,4-dicarboxylic acid 0.769 3 C5A (1s,3s)-1-aminocyclopentane-1,3-dicarboxylic acid 0.769 4 C5B (1s,3r)-1-aminocyclopentane-1,3-dicarboxylic acid 0.769 5 192 1-aminocyclobutanecarboxlic acid 0.727 6 II7 Cis-3-aminocyclobutane carboxylic acid 0.727 7 40F (1s,2s,5r,6s)-2-aminobicyclo[3.1.0]hexane-2,6-dicarboxylic acid 0.714