2'-O-<1-(2-fluorophenyl)-4-methoxypiperidin-4-yl>-N-1,N-3-bis(pivaloyloxymethyl)-3',5'-O-(tetraisopropyldisiloxane-1,3-diyl)pseudouridine

5'-O-dimethoxytrityl-2'-O-<1-(2-fluorophenyl)-4-methoxypiperidin-4-yl>-N-1,N-3-bis(pivaloyloxymethyl)pseudouridine