1	RAI	1-(4-carboxy-2-guanidinopentyl)-5,5'-di(hydroxymethyl)pyrrolidin-2-one	1.000
2	RA2	1-[4-carboxy-2-(3-pentylamino)phenyl]-5,5'-di(hydroxymethyl)pyrrolidin-2-one	0.778
3	IBA	4-[(2r)-2-(aminomethyl)-2-(hydroxymethyl)-5-oxopyrrolidin-1-yl]-3-[(1-ethylpropyl)amino]benzoic acid	0.714