4'-azido-2'-deoxy-2-fluoro-3'-(4,4'-dimethoxy-2'-ethoxycarbonyl-5,6,5',6'-bis(methylenedioxy)-1,1'-biphenyl-2-carboxyl)- 4-(glutamic acid dimethyl ester amino)cytidine
4'-azido-2'-deoxy-2-fluoro-3'-(4,4'-dimethoxy-2'-ethoxycarbonyl-5,6,5',6'-bis(methylenedioxy)-1,1'-biphenyl-2-carboxyl)- 4-(glutamic acid dimethyl ester amino)cytidine