Using ethyl 6-(trifluoromethyl)-1H-indole-2-carboxylate, tert-butyl (5R)-5-(1-((dimethylsilyl)oxy)-2,2,3-trimethylbutyl)-1,2,3-oxathiazolidine-3-carboxylate 2,2-dioxide to produce (4S)-4-(1-((dimethylsilyl)oxy)-2,2,3-trimethylbutyl)-7-(trifluoromethyl)-3,4-dihydropyrazino[1,2-a]indol-1(2H)-one, 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"
    ]
}
```
