5-(5-(2-CHLOROETHYL)-2,4-DIOXO-1,2,3,4-TETRAHYDROPYRIMIDIN-1-YL)-2-(HYDROXYMETHYL)OXOLAN-3-YL 2-(DIMETHOXYPHOSPHORYL)ACETATE, (2R,3S,5R)-
5-(5-(2-chloroethyl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-1-yl)-2-(hydroxymethyl)oxolan-3-yl 2-(dimethoxyphosphoryl)acetate, (2r,3s,5r)-