1	02A	(2s)-azetidine-2-carboxylic acid	1.000
2	A1EAI	(2~{S},3~{z})-3-ethylideneazetidine-2-carboxylic acid	0.778
3	A8G	(2s)-oxetane-2-carboxylic acid	0.750
4	ZPM	Cyclobutanecarboxylic acid	0.750