1	P2S	(2s)-2-amino-4-[[(2r)-2-carboxybutyl](phosphono)sulfonimidoyl]butanoic acid	1.000
2	LBP	(2s)-2-amino-4-(S-butyl-N-phosphonosulfonimidoyl)butanoic acid	0.857
3	P3S	L-methionine-S-sulfoximine phosphate	0.714