英文别名
                        tert-butyl 3-[(5R,6S,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-3-phenyl-7-oxa-2lambda6-thia-1-azaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxopyrimidine-1-carboxylate;tert-butyl 3-[(5R,6S,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-3-phenyl-7-oxa-2λ6-thia-1-azaspiro[4.4]non-3-en-8-yl]-5-methyl-2,6-dioxopyrimidine-1-carboxylate