Using benzyl L-tryptophanate, (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(tert-butoxy)-4-oxobutanoic acid to produce tert-butyl (S)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(((S)-1-(benzyloxy)-3-(1H-indol-3-yl)-1-oxopropan-2-yl)amino)-4-oxobutanoate, 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"
    ]
}
```
