Using O=[Cr](=O)([O-])Cl, 3-benzyl-5-methyl-2-(3,4,5-trimethoxyphenyl)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one to produce 3-benzyl-5-methyl-2-(3,4,5-trimethoxyphenyl)-6,7-dihydrobenzo[4,5]thieno[2,3-d]pyrimidine-4,8(3H,5H)-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"
    ]
}
```
