125078-79-7 2,4-Dinitrophenyl 5'-O-(4,4'-dimethoxytrityl)thymidine succinate 5'-O-(4,4'-Dimethoxytrityl)thymidine-3'-O-(2,4-dinitrophenyl) succinate DTDS Thymidine, 5'-O-(bis(4-methoxyphenyl)phenylmethyl)-, 3'-(2,4-dinitrophenyl butanedioate)