Using 1,2-dibenzyl 1-(tert-butyl) (2R)-4-methylpentane-1,1,2-tricarboxylate, 4-(bromomethyl)-1,2-dimethyl-1,2,4-triazolidine-3,5-dione to produce 2,3-dibenzyl 2-(tert-butyl) (3R)-1-(1,2-dimethyl-3,5-dioxo-1,2,4-triazolidin-4-yl)-5-methylhexane-2,2,3-tricarboxylate, 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"
    ]
}
```
