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