[[(2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-oxidophosphoryl] phosphate
[[(2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxo-pyrimidin-1-yl)tetrahydrofuran-2-yl]methoxy-oxido-phosphoryl] phosphate
[[(2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxo-1-pyrimidinyl)-2-tetrahydrofuranyl]methoxy-oxidophosphoryl] phosphate
[[(2R,3S,5R)-5-(2,4-diketo-5-methyl-pyrimidin-1-yl)-3-hydroxy-tetrahydrofuran-2-yl]methoxy-oxido-phosphoryl] phosphate
[[(2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxo-pyrimidin-1-yl)oxolan-2-yl]methoxy-oxido-phosphoryl] phosphate