Using methyl 4-bromo-3-((4-chlorophenyl)thio)-1-(4-ethoxy-4-oxobutyl)-6-fluoro-1H-indole-2-carboxylate to produce ethyl 1-bromo-10-((4-chlorophenyl)thio)-3-fluoro-9-oxo-6,7,8,9-tetrahydropyrido[1,2-a]indole-8-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"
    ]
}
```
