Using ethyl 4-bromobutanoate, 3-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-5-(2-((2-(6-methoxy-1,5-naphthyridin-4-yl)ethyl)amino)ethyl)oxazolidin-2-one to produce ethyl 4-((2-(3-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-2-oxooxazolidin-5-yl)ethyl)(2-(6-methoxy-1,5-naphthyridin-4-yl)ethyl)amino)butanoate, 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"
    ]
}
```
