| ID | Description | N° of binding sites | Bound to chains |
|---|---|---|---|
| 2 | [[[(2~{r} + 3~{S} + 4~{r} + 5~{r})-5-(6-aminopurin-9-yl)-3-[[(2~{r} + 3~{S} + 4~{r} + 5~{r})-5-(6-azanyl-4 + 5-dihydropurin-9-yl)-3 + 4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl]oxy-4-oxidanyl-oxolan-2-yl]methoxy-oxidanyl-phosphoryl]oxy-sulfanyl-phosphoryl] [(2~{r} + 3~{S} + 4~{r} + 5~{r})-5-(2-azanyl-7-methyl-6-oxidanylidene-1~{h}-purin-9-yl)-3 + 4-bis(oxidanyl)oxolan-2-yl]methyl hydrogen phosphate | 6 (4 molecules) | A, B, C, D |