Using 4-(2-oxo-1,3-oxazinan-3-yl)butanal, (S)-N-ethyl-1-(4-(methylthio)phenyl)propan-2-amine to produce (S)-3-(4-(ethyl(1-(4-(methylthio)phenyl)propan-2-yl)amino)butyl)-1,3-oxazinan-2-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"
    ]
}
```
