1	HYN	Imidazolidine-2,4-dione	1.000
2	A1JDZ	1~{H}-imidazole-2,4-diol	1.000
3	A1ISW	2h-imidazol-2-ol	0.857
4	XJV	Imidazolidin-2-one	0.857
5	9UW	2-sulfanylideneimidazol-4-one	0.750
6	OD3	1,3-thiazolidine-2,4-dione	0.750
7	SZB	Succinimide	0.750
8	IMD	Imidazole	0.714
9	6HQ	1,5,5-trimethylimidazolidine-2,4-dione	0.700