Using tert-butyl (R)-6-cyclohexyl-3-(((S)-1-ethoxy-3-hydroxy-1-oxopropan-2-yl)carbamoyl)hexanoate to produce ethyl (S)-2-((R)-1-(tert-butoxy)-6-cyclohexyl-1-oxohexan-3-yl)-4,5-dihydrooxazole-4-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"
    ]
}
```
