英文名称
3-[[(1S)-1-[(2S,3S,5R)-3-[tert-butyl(diphenyl)silyl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]but-3-enoxy]-[(2R,3S,5R)-2-[[tert-butyl(diphenyl)silyl]oxymethyl]-2-ethenyl-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl]oxy-oxidophosphaniumyl]oxypropanenitrile