Using ethyl 2-bromoacetate, 3a-(4-bromobenzyl)-1-(3,5-dichlorophenyl)-1,3,3a,4,5,6-hexahydro-2H-benzo[d]imidazol-2-one to produce ethyl 2-(7a-(4-bromobenzyl)-3-(3,5-dichlorophenyl)-2-oxooctahydro-3aH-benzo[d]imidazol-3a-yl)acetate, 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"
    ]
}
```
