1 G23 (2r,4s)-2-[(R)-benzylcarbamoyl-phenylacetyl-methyl]-5,5-dimethyl-thiazolidine-4-carboxylic acid 1.000 2 PNM Open form - penicillin G 0.742 3 AIX (2r,4s)-2-[(1r)-1-{[(2r)-2-amino-2-phenylacetyl]amino}-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid 0.719 4 NDV (2s,4s)-2-[(1r)-1-{[(2r)-2-amino-2-phenylacetyl]amino}-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid 0.719 5 NW3 (2s,4s)-2-[(1s)-1-{[(2s)-2-amino-2-phenylacetyl]amino}-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid 0.719 6 PNK (2r,4s)-2-{(R)-carboxy[(phenylacetyl)amino]methyl}-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid 0.719 7 G26 2-(benzylcarbamoyl-phenylacetylamino-methyl)-5,5-dimethyl-thiazolidine-4-carboxylic acid (hydroxymethyl-2-phenylethyl)amide 0.714