1	PAO	N-(phosphonoacetyl)-L-ornithine	1.000
2	PUW	N-(phosphonoacetyl)-putrescine	0.812
3	ORQ	N~5~-acetyl-L-ornithine	0.750
4	PA9	N~2~-acetyl-N~5~-(phosphonoacetyl)-L-ornithine	0.750
5	AHO	N-acetyl-N-hydroxy-L-ornithine	0.706