1	5PU	4-[(2~{R})-2-carboxy-5-(oxidanylamino)-5-oxidanylidene-pentyl]benzoic acid	1.000
2	5Q1	4-[(2~{S})-2-carboxy-5-(oxidanylamino)-5-oxidanylidene-pentyl]benzoic acid	1.000
3	BHK	(2r)-2-benzyl-5-hydroxy-4-oxopentanoic acid	0.714
4	CIN	4-carboxycinnamic acid	0.700