Using 1,3-dibromopropane, 6-mercapto-1-methyl-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one to produce 1-methyl-7,8-dihydro-6H-pyrazolo[3',4':4,5]pyrimido[2,1-b][1,3]thiazin-4(1H)-one, 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"
    ]
}
```
