The molecule is a single-strand DNA oligonucleotide comprised of four deoxyadenosine, two deoxycytidine, four thymidine and eight deoxyguanidine residues connected by 3'->5' phosphodiester linkages in the sequence G-C-G-A-G-T-G-A-T-T-A-T-G-G-A-C-G-G, with a (6-4) lesion at the central two thymidine residues (PDB entry: 3VW3).
[(2R,3S,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-2-[[[(2R,3S,5R)-2-[[[(2R,3S,5R)-2-[[[(2R,3S,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-2-[[[(2R,3S,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-2-[[[(2R,3S,5R)-2-[[[(2R,3S,5R)-2-[[[(2R,4S,5R,10S,11R,13R,18R,19S)-11-[[[(2R,3S,5R)-2-[[[(2R,3S,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-2-[[[(2R,3S,5R)-2-[[[(2R,3S,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-2-[[[(2R,3S,5R)-2-[[[(2R,3S,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-2-[[[(2R,3S,5R)-2-[[[(2R,3S,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-2-(hydroxymethyl)oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]-5-(6-aminopurin-9-yl)oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]-5-(6-aminopurin-9-yl)oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]-8,18-dihydroxy-18,24-dimethyl-8,15,17,22-tetraoxo-7,9,12,26-tetraoxa-1,14,16,21-tetraza-8lambda5-phosphapentacyclo[18.2.2.12,5.110,13.014,19]hexacosa-20,23-dien-4-yl]oxy-hydroxyphosphoryl]oxymethyl]-5-(6-aminopurin-9-yl)oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]-5-(6-aminopurin-9-yl)oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-3-yl]oxy-hydroxyphosphoryl]oxymethyl]oxolan-3-yl] [(2R,3S,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-3-hydroxyoxolan-2-yl]methyl hydrogen phosphate