IUPAC Name: [4',5'-dichloro-5-[6-[2-cyanoethoxy-[di(propan-2-yl)amino]phosphanyl]oxyhexylcarbamoyl]-6'-(2,2-dimethylpropanoyloxy)-2',7'-dimethoxy-3-oxospiro[2-benzofuran-1,9'-xanthene]-3'-yl] 2,2-dimethylpropanoate Synonyms: JOE phosphoramidite, 5-isomer, JOE phosphoramidite