1	BAQ	Pyrrolidin-2-one	1.000
2	7UK	(R)-4-hydroxy-2-pyrrolidone	0.857
3	8QR	(3r)-3-aminopyrrolidin-2-one	0.857
4	A1IG7	(5~{S})-5-methylpyrrolidin-2-one	0.857
5	MB3	1-methylpyrrolidin-2-one	0.857
6	SZB	Succinimide	0.857
7	YV4	(3s)-3-aminopyrrolidin-2-one	0.857
8	VES	Pyrrolidine	0.833
9	66Y	(1s,4r)-2-azabicyclo[2.2.1]hept-5-en-3-one	0.750
10	66Z	(1~{S},4~{R})-3-azabicyclo[2.2.1]hept-5-en-2-one	0.750
11	CGN	5-oxo-pyrrolidine-2-carbaldehyde	0.750
12	LCY	1-methylpyrrolidine-2,5-dione	0.750
13	SNN	L-3-aminosuccinimide	0.750
14	5MP	5-methylpyrrole	0.714
15	6SP	(3s)-pyrrolidin-3-ol	0.714
16	A1ISW	2h-imidazol-2-ol	0.714
17	GBL	Gamma-butyrolactone	0.714
18	MFW	Cyclopentanone	0.714
19	MR3	1-methyl-1h-pyrrole	0.714
20	XJV	Imidazolidin-2-one	0.714
21	YEG	Cyclopentanol	0.714