1	ASB	Aspartic acid-4-carboxymethyl ester	1.000
2	ASL	Aspartic acid-4-carboxyethyl ester	0.929
3	0AK	(2s)-2-amino-4-(2-chloroethoxy)-4-oxobutanoic acid	0.786
4	9J3	4-ethoxy-4-oxobutanoic acid	0.769
5	FL6	(2s)-2-azanyl-4-methoxy-4-oxidanylidene-butanoic acid	0.769
6	NF3	(~{z})-4-ethoxy-4-oxidanylidene-but-2-enoic acid	0.769
7	A0A	(2s)-2-amino-4-(formyloxy)-4-oxobutanoic acid	0.714
8	AVG	2-amino-4-(2-amino-ethoxy)-butyric acid	0.714