1	OYG	6-methyl-5-[(1e)-3-oxobut-1-en-1-yl]pyrimidine-2,4(1h,3h)-dione	1.000
2	YRO	5-(3,3-dimethylbutyl)-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid	0.722
3	Y3G	5-ethynylpyrimidine-2,4(1h,3h)-dione	0.714