"3',5'-Bis-O-[(1,1-diMethylethyl)diMethylsilyl]-α-[[(1,1-diMethylethyl)diMethylsilyl]oxy]thyMidine"
"3',5'-Bis-O-[(1,1-diMethylethyl)diMethylsilyl]-α-[[(1,1-diMethylethyl)diMethylsilyl]oxy]thyMidine"
"3',5'-Bis-O-[(1,1-diMethylethyl)diMethylsilyl]-α-[[(1,1-diMethylethyl)diMethylsilyl]oxy]thyMidine"