1	2R1	(2e)-2-amino-4-hydroxy-3-[(2r)-oxiran-2-yl]but-2-enoic acid	1.000
2	LIS	(2s,4s)-2-amino-4,5-epoxipentanoic acid	0.818
3	AS2	(2r)-2-amino-4-oxobutanoic acid	0.727
4	HSE	L-homoserine	0.727