英文名称
1-[(2R,4S,5R)-4-[[(3aR,4R,6R,6aR)-4-(2,4-dioxo-5-prop-2-enylpyrimidin-1-yl)-2,2-dimethyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]methoxy-oxido-prop-2-enoxyphosphaniumyl]oxy-5-[[tert-butyl(dimethyl)silyl]oxymethyl]oxolan-2-yl]-5-methylpyrimidine-2,4-dione