1	OXC	Oxonic acid	1.000
2	DOR	(4s)-2,6-dioxohexahydropyrimidine-4-carboxylic acid	0.833
3	OG6	6-[bis(oxidanyl)methyl]-5~{H}-pyrimidine-2,4-dione	0.833
4	ORO	Orotic acid	0.833
5	FOT	5-fluoro-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	0.769
6	HRO	5-chloro-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	0.769
7	IJZ	5-amino-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	0.769
8	IRO	5-iodo-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	0.769
9	RRO	5-bromo-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	0.769
10	TJJ	2-oxo-2,3-dihydropyrimidine-4-carboxylic acid	0.750
11	ERO	5-ethenyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	0.714