CAS No 23669-79-6 , 5'-O-(4,4'-Dimethoxytrityl)-2'-deoxyuridine5'-O-[Bis(4-methoxyphenyl)benzyl]-2'-deoxyuridine5'-O-(4,4'-Dimethoxytrityl)-2'-deoxyuridine5'-O-[Bis(4-methoxyphenyl)benzyl]-2'-deoxyuridine5'-O-(4,4'-Dimethoxytrityl)-2'-deoxyuridine5'-O-[Bis(4-methoxyphenyl)benzyl]-2'-deoxyuridine5'-O-(4,4'-Dimethoxytrityl)-2'-deoxyuridine5'-O-[Bis(4-methoxyphenyl)benzyl]-2'-deoxyuridine5'-O-(4,4'-Dimethoxytrityl)-2'-deoxyuridine5'-O-[Bis(4-methoxyphenyl)benzyl]-2'-deoxyuridine5'-O-(4,4'-Dimethoxytrityl)-2'-deoxyuridine5'-O-[Bis(4-methoxyphenyl)benzyl]-2'-deoxyuridine5'-O-(4,4'-Dimethoxytrityl)-2'-deoxyuridine5'-O-[Bis(4-methoxyphenyl)benzyl]-2'-deoxyuridine5'-O-(4,4'-Dimethoxytrityl)-2'-deoxyuridine5'-O-[Bis(4-methoxyphenyl)benzyl]-2'-deoxyuridine5'-O-(4,4'-Dimethoxytrityl)-2'-deoxyuridine