1	T8J	1-[4-(thiophene-2-carbonyl)piperazin-1-yl]ethan-1-one	1.000
2	T8M	1-{4-[(thiophen-2-yl)methyl]piperazin-1-yl}ethan-1-one	0.938
3	NUY	[4-(propan-2-yl)piperazin-1-yl](thiophen-2-yl)methanone	0.882
4	T6Y	1-{4-[(5-chlorothiophen-2-yl)methyl]piperazin-1-yl}ethan-1-one	0.882
5	T81	1-{4-[(5-bromothiophen-2-yl)methyl]piperazin-1-yl}ethan-1-one	0.882
6	U1G	1-[4-(furan-2-carbonyl)piperazin-1-yl]ethan-1-one	0.882
7	U0Y	1-[4-(4-methylbenzene-1-carbonyl)piperazin-1-yl]ethan-1-one	0.789
8	K2M	4-(furan-2-carbonyl)piperazine-1-carboxamide	0.778
9	SYX	(4-methylpiperazin-1-yl)[(2r)-oxolan-2-yl]methanone	0.765
10	ZPB	N-(propan-2-yl)-4-(thiophene-2-carbonyl)piperazine-1-carboxamide	0.750
11	T2G	1-{4-[(3-methylphenyl)methyl]piperazin-1-yl}ethan-1-one	0.737
12	T47	1-{4-[(3-chlorophenyl)methyl]piperazin-1-yl}ethan-1-one	0.737
13	WJM	2-[4-(furan-2-carbonyl)piperazin-1-yl]acetamide	0.737
14	T84	1-{4-[(thiophen-3-yl)methyl]piperazin-1-yl}ethan-1-one	0.722
15	Y0D	N-(cyclopropylmethyl)-4-(thiophene-2-carbonyl)piperazine-1-carboxamide	0.714
16	ZKH	N-(2-methoxyethyl)-4-(thiophene-2-carbonyl)piperazine-1-carboxamide	0.714
17	ZQ5	N-butyl-4-(thiophene-2-carbonyl)piperazine-1-carboxamide	0.714
18	A1IIR	Furan-2-yl(piperazin-1-yl)methanone	0.706
19	JMM	[4-(cyclopropanecarbonyl)piperazin-1-yl](furan-2-yl)methanone	0.700
20	KS0	1-{4-[(4-fluorophenyl)methyl]piperazin-1-yl}propan-1-one	0.700
21	OJO	1-{4-[(3-chloro-5-hydroxyphenyl)methyl]piperazin-1-yl}ethan-1-one	0.700
22	Q4F	1-{(1s,4s)-5-[(3-chlorophenyl)methyl]-2,5-diazabicyclo[2.2.1]heptan-2-yl}ethan-1-one	0.700
23	S9G	Cyclopropyl-[4-[(2~{S})-oxolan-2-yl]carbonylpiperazin-1-yl]methanone	0.700