((2R,3S,5R)-3-acetoxy-5-(2-(((4-methoxyphenyl)diphenylmethyl)amino)-6-oxo-1,6-dihydro-9H-purin-9-yl)tetrahydrofuran-2-yl)methyl acetate

3',5'-di-O-acetyl-2'-deoxy-2-N-(di-p-methoxytrityl)guanosine

5-O-(4,4-二甲氧基三苯甲游基)-2-脱氧鸟苷

5'-O-(4,4'-dimethoxytrityl)-2-N-(diphenylacetyl)-2'-deoxyguanosine

2-N-diphenylacetyl-2'-deoxyguanosine