1	PNK	(2r,4s)-2-{(R)-carboxy[(phenylacetyl)amino]methyl}-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid	1.000
2	OAE	(2s,4s)-2-[(R)-{[(2r)-2-amino-2-phenylacetyl]amino}(carboxy)methyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid	0.960
3	ZZ7	(2r,4s)-2-[(R)-{[(2r)-2-amino-2-phenylacetyl]amino}(carboxy)methyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid	0.960
4	PNM	Open form - penicillin G	0.958
5	A1EOR	(2~{R},4~{S})-2-[(1~{R})-1-[[(2~{R})-2-azanyl-2-(4-hydroxyphenyl)ethanoyl]amino]-2-oxidanyl-2-oxidanylidene-ethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid	0.923
6	AIX	(2r,4s)-2-[(1r)-1-{[(2r)-2-amino-2-phenylacetyl]amino}-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid	0.920
7	NDV	(2s,4s)-2-[(1r)-1-{[(2r)-2-amino-2-phenylacetyl]amino}-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid	0.920
8	NW3	(2s,4s)-2-[(1s)-1-{[(2s)-2-amino-2-phenylacetyl]amino}-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid	0.920
9	AXL	2-{1-[2-amino-2-(4-hydroxy-phenyl)-acetylamino]-2-oxo-ethyl}-5,5-dimethyl-thiazolidine-4-carboxylic acid	0.885
10	CB9	(2r,4s)-2-[(1r)-1-{[(2s)-2-carboxy-2-phenylacetyl]amino}-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid	0.852
11	3S3	(1r)-2-({(R)-carboxy[(2r,5s)-4-carboxy-5-methyl-5,6-dihydro-2h-1,3-thiazin-2-yl]methyl}amino)-2-oxo-1-phenylethanaminium	0.815
12	Q53	(R)-2-((R)-((R)-2-amino-2-phenylacetamido)(carboxy)methyl)-5-methyl-3,6-dihydro-2h-1,3-thiazine-4-carboxylic acid	0.815
13	CD6	(2r)-5-methylidene-2-{(1r)-2-oxo-1-[(phenylacetyl)amino]ethyl}-5,6-dihydro-2h-1,3-thiazine-4-carboxylic acid	0.808
14	63U	(2s)-2-[(1r)-1-{[(2r)-2-amino-2-phenylacetyl]amino}-2-oxoethyl]-5-methyl-3,6-dihydro-2h-1,3-thiazine-4-carboxylic acid	0.778
15	Q6R	(R)-2-((R)-((R)-2-amino-2-phenylacetamido)(carboxy)methyl)-5-chloro-3,6-dihydro-2h-1,3-thiazine-4-carboxylic acid	0.750
16	XT8	(2r,4s)-2-[(1r)-1-{[(2r)-2-carboxy-2-(thiophen-3-yl)acetyl]amino}-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid	0.750
17	FMZ	(2r,4s)-5,5-dimethyl-2-[(1r)-2-oxo-1-({(2r)-2-[(2-oxoimidazolidin-1-yl)amino]-2-phenylacetyl}amino)ethyl]-1,3-thiazolidine-4-carboxylic acid	0.742
18	KCP	2-[carboxy-(2-thiophen-2-yl-acetylamino)-methyl]-5-methyl-3,6-dihydro-2h-[1,3]thiazine-4-carboxylic acid	0.741
19	THN	2-[carboxy-(2-thiophen-2-yl-acetylamino)-methyl]-5-methylene-5,6-dihydro-2h-[1,3]thiazine-4-carboxylic acid	0.741
20	G23	(2r,4s)-2-[(R)-benzylcarbamoyl-phenylacetyl-methyl]-5,5-dimethyl-thiazolidine-4-carboxylic acid	0.719
21	LOR	Loracabef (open form)	0.714
22	63V	(2s)-5-methylidene-2-{(1r)-2-oxo-1-[(thiophen-2-ylacetyl)amino]ethyl}-5,6-dihydro-2h-1,3-thiazine-4-carboxylic acid	0.704
23	CED	5-methyl-2-[2-oxo-1-(2-thiophen-2-yl-acetylamino)-ethyl]-3,6-dihydro-2h-[1,3]thiazine-4-carboxylic acid	0.704
24	CEO	5-methylene-2-[2-oxo-1-(2-thiophen-2-yl-acetylamino)-ethyl]-5,6-dihydro-2h-[1,3]thiazine-4-carboxylic acid	0.704
25	NCF	(2r)-2-{(1r)-2-oxo-1-[(2-thienylacetyl)amino]ethyl}-5,6-dihydro-2h-1,3-thiazine-4-carboxylic acid	0.704
26	TJ7	(2r,4s)-2-[(1s)-1-{[(2r)-2-carboxy-2-(thiophen-3-yl)acetyl]amino}-1-methoxy-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4 -carboxylic acid	0.700