Using perbromomethane, 5-((8R,9S,11S,13S,14S,17R)-17-(tert-butyl)-13-(((dimethylsilyl)oxy)methyl)-3-methoxy-8-vinyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-11-yl)pentan-1-ol to produce (((8R,9S,11S,13S,14S,17R)-11-(5-bromopentyl)-17-(tert-butyl)-3-methoxy-8-vinyl-6,7,8,9,11,12,14,15,16,17-decahydro-13H-cyclopenta[a]phenanthren-13-yl)methoxy)dimethylsilane, 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"
    ]
}
```
