1	NCD	N-carbamoyl-L-aspartate	1.000
2	C5S	N-formyl-D-aspartic acid	0.917
3	NFQ	N-[(E)-iminomethyl]-L-aspartic acid	0.917
4	KKD	N-acetyl-L-aspartic acid	0.846
5	OEM	N-methyl-D-aspartic acid	0.833
6	SOQ	N-methyl-L-aspartic acid	0.833
7	CDV	3-methyl-2-ureido-butyric acid	0.769
8	NCB	N-carbamoyl-alanine	0.750
9	URP	N-(aminocarbonyl)-beta-alanine	0.750
10	5XW	(2~{z})-2-(1-oxidanyl-3-oxidanylidene-propyl)iminobutanedioic acid	0.733
11	CDT	4-methylsulfanyl-2-ureido-butyric acid	0.714
12	EKN	(2~{S})-2-(2-azanylethylamino)butanedioic acid	0.714
13	W9J	N-carbamoyl-L-methionine	0.714