Adenosine, uridylyl-(5'-3')-uridylyl-(5'-3')-uridylyl-(5'-3')-uridylyl-(5'-3')-uridylyl-(5'-3')-uridylyl-(5'-3')-uridylyl-(5'-3')-adenylyl-(5'-3')-adenylyl-(5'-3')-adenylyl-(5'-3')-adenylyl-(5'-3')-adenylyl-(5'-3')-adenylyl-(5'-3')-