Using benzyl 4-bromobutanoate, (5S,7R,8R,9S,10S,13S,14S,17S)-7-(3-(3-(benzyloxy)-5-hydroxyphenyl)propyl)-17-((tert-butyldimethylsilyl)oxy)-10,13-dimethylhexadecahydro-3H-cyclopenta[a]phenanthren-3-one to produce benzyl 4-(3-(benzyloxy)-5-(3-((5S,7R,8R,9S,10S,13S,14S,17S)-17-((tert-butyldimethylsilyl)oxy)-10,13-dimethyl-3-oxohexadecahydro-1H-cyclopenta[a]phenanthren-7-yl)propyl)phenoxy)butanoate, 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"
    ]
}
```
