1	ALG	4-carbamimidamidobutanoic acid	1.000
2	4J5	Amino{[(3s)-3-amino-3-carboxypropyl]amino}methaniminium	0.909
3	A1AZK	N-(4-oxobutyl)guanidine	0.900
4	NGQ	N-carbamimidoyl-L-glutamic acid	0.769
5	AG2	Agmatine	0.727