Using 8-benzyl 2-(tert-butyl) (3R,9aS)-3-(3-cyano-4-fluoro-2-methylphenyl)hexahydro-2H-pyrazino[1,2-a]pyrazine-2,8(1H)-dicarboxylate to produce tert-butyl (3R,9aS)-3-(3-cyano-4-fluoro-2-methylphenyl)octahydro-2H-pyrazino[1,2-a]pyrazine-2-carboxylate, 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"
    ]
}
```
