Using ethylmagnesium bromide, 3-ethyl 1-isopropyl 7-methyl-4-oxo-1,8-naphthyridine-1,3(4H)-dicarboxylate to produce 3-ethyl 1-isopropyl 2-ethyl-7-methyl-4-oxo-3,4-dihydro-1,8-naphthyridine-1,3(2H)-dicarboxylate, 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"
    ]
}
```
