Using methyl 3-((1r,4r)-4-(2-oxo-3-(6,7,8,9-tetrahydro-5H-pyrazino[2,3-d]azepin-2-yl)imidazolidin-1-yl)cyclohexyl)propanoate, benzyl chloride to produce methyl 3-((1r,4r)-4-(3-(7-benzyl-6,7,8,9-tetrahydro-5H-pyrazino[2,3-d]azepin-2-yl)-2-oxoimidazolidin-1-yl)cyclohexyl)propanoate, 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"
    ]
}
```
