NSC365494 Thymidine, aracytidylyl-(5'-3')-thymidylyl-(5'-3')-thymidylyl-(5'-3'))thymidylyl-(5'-3')- Thymidine, aracytidylyl-(5'.fwdarw.3')-thymidylyl-(5'.fwdarw.3')-thymidylyl-(5'.fwdarw.3')-thymidylyl-(5'.fwdarw.3')-