Using n,n-dimethylformamide, ethyl (6-(methylamino)-2,4-dioxo-1,3-diphenyl-1,2,3,4-tetrahydropyrimidine-5-carbonothioyl)carbamate to produce 5-mercapto-8-methyl-1,3-diphenylpyrimido[4,5-d]pyrimidine-2,4,7(1H,3H,8H)-trione, 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"
    ]
}
```
