Using 4-(5,7-dihydroxy-4-oxo-1,2,3,4-tetrahydroquinolin-2-yl)butanoic acid to produce 7,9-dihydroxy-3,4,4a,5-tetrahydro-1H-pyrido[1,2-a]quinoline-1,6(2H)-dione, 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"
    ]
}
```
