1	7VJ	2-amino-6-(methylamino)-5-nitrosopyrimidin-4(3h)-one	1.000
2	680	6-methylamino-5-nitroisocytosine	0.923
3	B53	2,6-diamino-5-nitrosopyrimidin-4(3h)-one	0.769
4	B57	2,6-diamino-5-nitropyrimidin-4(3h)-one	0.714