The molecule is a single-stranded DNA oligonucleotide comprised of three deoxycytidine and three thymidine residues connected by 3'->5' phosphodiester linkages in the sequence C-C-T-T-T-C.
[(2R,3S,5R)-5-(4-amino-2-oxopyridin-1-yl)-2-[[[(2R,3S,5R)-5-(4-amino-2-oxopyridin-1-yl)-2-(hydroxymethyl)oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]oxolan-3-yl] [(2R,3S,5R)-3-[[(2R,3S,5R)-3-[[(2R,3S,5R)-3-[[(2R,3S,5R)-5-(4-amino-2-oxopyridin-1-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methyl hydrogen phosphate