The molecule is a triple-stranded DNA polynucleotide consisting of two strands of thymidine and residues, with a complementary strand of deoxyadenosine residues, all residues in each strand being connected by 3'->5' phosphodiester linkages. It contains a poly(deoxythymidylic acid) and a poly(deoxyadenylic acid).
[(2R,3S,5R)-5-(6-aminopurin-9-yl)-3-[[(2R,3S,5R)-5-(6-aminopurin-9-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methyl [(2R,3S,5R)-5-(6-aminopurin-9-yl)-2-(phosphonooxymethyl)oxolan-3-yl] hydrogen phosphate;[(2R,3S,5R)-3-[hydroxy-[[(2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy]phosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methyl [(2R,3S,5R)-5-(5-methyl-2,4-dioxopyrimidin-1-yl)-2-(phosphonooxymethyl)oxolan-3-yl] hydrogen phosphate