Using N-(tert-butoxycarbonyl)-N-methyl-L-alanine, benzyl (S)-4-(L-valyl)-3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)piperazine-1-carboxylate to produce benzyl (S)-4-(N-(tert-butoxycarbonyl)-N-methyl-L-alanyl-L-valyl)-3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)piperazine-1-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"
    ]
}
```
