Using tert-butyl (S)-4-((S)-2-((3-chloro-4-(trifluoromethyl)phenyl)amino)-N-(2,2-dimethoxyethyl)propanamido)-5-methoxypentanoate to produce (S)-4-((S)-4-(3-chloro-4-(trifluoromethyl)phenyl)-3-methyl-2-oxopiperazin-1-yl)-5-methoxypentanoic acid, 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"
    ]
}
```
