1-[1',4'-di-O-benzyl-3'-deoxy-5'-C-hydroxymethyl-β-D-psicofuranosyl]uracil

1-[1',4'-di-O-benzyl-3'-deoxy-5'-C-methanesulfonyloxymethyl-6'-O-methanesulfonyl-β-D-psicofuranosyl]uracil