1	AVG	2-amino-4-(2-amino-ethoxy)-butyric acid	1.000
2	AMB	L-2-amino-4-methoxy-cis-but-3-enoic acid	0.818
3	0AK	(2s)-2-amino-4-(2-chloroethoxy)-4-oxobutanoic acid	0.769
4	9J3	4-ethoxy-4-oxobutanoic acid	0.750
5	BB7	(2z)-2-amino-4-methoxy-3-sulfanylbut-2-enoic acid	0.750
6	FL6	(2s)-2-azanyl-4-methoxy-4-oxidanylidene-butanoic acid	0.750
7	NF3	(~{z})-4-ethoxy-4-oxidanylidene-but-2-enoic acid	0.750
8	ASB	Aspartic acid-4-carboxymethyl ester	0.714