1	M1Z	6-pyrrolidin-1-yl-5~{H}-pyrimidine-2,4-dione	1.000
2	LUZ	Pteridine-2,4(1h,3h)-dione	0.786
3	VQB	4-chloro-6-(pyrrolidin-1-yl)pyrimidin-5-amine	0.733
4	XAN	Xanthine	0.714