9-(3,5-di-O-benzoyl-2-deoxy-2,4-difluoro-2-C-methyl-β-D-ribofuranosyl)-6-ethoxy-2-((4-monomethoxytrityl)amino)purine
9-(2-deoxy-2,4-difluoro-2-C-methyl-β-D-ribofuranosyl)-6-ethoxy-2-((4-monomethoxytrityl)amino)purine
C40H36F2IN5O5
C28H37F2N6O8P
C68H69F2N6O10P