Benzoic acid (2R,3S,5R)-5-(4-benzoylamino-2-oxo-2H-pyrimidin-1-yl)-3-[(2R,3S,5R)-5-(4-benzoylamino-2-oxo-2H-pyrimidin-1-yl)-3-(2-methoxy-acetoxy)-tetrahydro-furan-2-ylmethoxymethoxy]-tetrahydro-furan-2-ylmethyl ester
Benzoic acid (2R,3S,5R)-3-[(2R,3S,5R)-5-(4-benzoylamino-2-oxo-2H-pyrimidin-1-yl)-3-(2-methoxy-acetoxy)-tetrahydro-furan-2-ylmethoxymethoxy]-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-ylmethyl ester