Using potassium 2-methylpropan-2-olate, (S)-3-(2-oxo-3-(3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)oxazolidin-5-yl)propanal to produce 6-(5-(but-3-en-1-yl)-2-oxooxazolidin-3-yl)-2H-benzo[b][1,4]oxazin-3(4H)-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"
    ]
}
```
