1	9UW	2-sulfanylideneimidazol-4-one	1.000
2	MZY	1,3-dihydroimidazole-2-thione	0.857
3	E60	2-sulfanylidene-1,3-thiazolidin-4-one	0.750
4	HYN	Imidazolidine-2,4-dione	0.750
5	MMZ	1-methyl-1,3-dihydro-2h-imidazole-2-thione	0.750
6	IMD	Imidazole	0.714