1	DUS	2'-deoxy-5'-O-sulfouridine	1.000
2	RQA	5'-O-sulfocytidine	0.864
3	DDU	2'-5'dideoxyuridine	0.750
4	TCP	5'-methylthymidine	0.727
5	D3Z	1-(5-deoxy-beta-L-xylofuranosyl)pyrimidine-2,4(1h,3h)-dione	0.714
6	DUR	2'-deoxyuridine	0.714
7	THU	Tetrahydrodeoxyuridine	0.714
8	U4P	5'-deoxyuridine	0.714