Using tert-butyl (S)-5-(((S)-1-(((S)-1-amino-3-methyl-1-oxobutan-2-yl)amino)-3-methyl-1-oxobutan-2-yl)amino)-4-(((benzyloxy)carbonyl)amino)-5-oxopentanoate to produce tert-butyl (S)-4-amino-5-(((S)-1-(((S)-1-amino-3-methyl-1-oxobutan-2-yl)amino)-3-methyl-1-oxobutan-2-yl)amino)-5-oxopentanoate, 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"
    ]
}
```
