141018-21-5 Cytidine, N-((bis(1-methylethyl)amino)methylene)-2',3'-dideoxy-3'-fluoro- Ipmfddc N-((Bis(1-methylethyl)amino)methylene)-2',3'-dideoxy-3'-fluorocytidine N4-((Diisopropylamino)methylene)-3'-fluoro-2',3'-dideoxycytidine