Using dimethoxymethane, (1S,3S,5S,8R,9S,10S,13S,14S,17S)-3-hydroxy-1,10,13-trimethyl-17-propylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate to produce (1S,3S,5S,8R,9S,10S,13S,14S,17S)-3-(methoxymethoxy)-1,10,13-trimethyl-17-propylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate, 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"
    ]
}
```
