1	PW3	4-acetyl-piperazin-2-one	1.000
2	ZGX	1-(3,4-dihydropyrazin-1(2h)-yl)ethan-1-one	0.900
3	1FP	Piperazine-1-carbaldehyde	0.800
4	BZP	N1-carboxypiperazine	0.727
5	MJB	2-piperazin-1-ylethanol	0.727
6	XJJ	Piperazin-2-one	0.700