Using benzyl ((3R,4R,5S,E)-4-acetyl-5-((tert-butyldimethylsilyl)oxy)-4-(3,3-dimethylureido)-1-phenylhex-1-en-3-yl)carbamate, formaldehyde to produce benzyl ((3R,4R,E)-4-((S)-1-((tert-butyldimethylsilyl)oxy)ethyl)-4-(3,3-dimethylureido)-7-hydroxy-5-oxo-1-phenylhept-1-en-3-yl)carbamate, 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"
    ]
}
```
