英文名称
2-[3-[(1R,3R,4R)-6-amino-4-[tert-butyl(dimethyl)silyl]oxy-1-[[tert-butyl(dimethyl)silyl]oxymethyl]-8,8-dioxo-2,9-dioxa-8$l^{6}-thiaspiro[4.4]non-6-en-3-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]ethyl (2S)-2-(benzyloxycarbonylamino)-3-methyl-butanoate