Using benzyl L-valylglycinate, (S)-5-(benzyloxy)-4-(((benzyloxy)carbonyl)amino)-5-oxopentanoic acid to produce benzyl N5-((S)-1-((2-(benzyloxy)-2-oxoethyl)amino)-3-methyl-1-oxobutan-2-yl)-N2-((benzyloxy)carbonyl)-L-glutaminate, 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"
    ]
}
```
