Using 9-(4-fluorobenzyl)-6-hydroxy-1,3-dimethyl-2,3-dihydropyrimido[2,1-f]purine-4,8(1H,9H)-dione, 1-bromo-3-methylbut-2-ene to produce 9-(4-fluorobenzyl)-6-hydroxy-1,3-dimethyl-7-(3-methylbut-2-en-1-yl)-2,3-dihydropyrimido[2,1-f]purine-4,8(1H,9H)-dione, please predict the condition, including solvent and agent in SMILES notation in json format like:

```JSON
{
    "solvent": [
        "CCN(CC)CC",
        "CCOC(C)=O"
    ],
    "agent": [
        "On1nnc2ccccc21",
        "C(=NC1CCCCC1)=NC1CCCCC1",
        "Cl"
    ]
}
```
