Using 1-(6-(ethoxycarbonyl)-6-azaspiro[3.4]octan-2-yl)-4-fluoropiperidine-4-carboxylic acid, 1-methylcyclobutan-1-amine to produce ethyl 2-(4-fluoro-4-((1-methylcyclobutyl)carbamoyl)piperidin-1-yl)-6-azaspiro[3.4]octane-6-carboxylate, 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"
    ]
}
```
