AIDS-108201 AIDS108201 Phosphoric acid (2R,3S,5R)-5-(4-amino-2-oxo-2H-pyrimidin-1-yl)-2-phosphonooxymethyl-tetrahydro-furan-3-yl ester (2R,3S,4R)-4-(2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-3-hydroxy-tetrahydro-furan-2-ylmethyl ester pdCpIsodU