Using (2'S,3'R,6'R)-3',6'-dihydroxy-2'-(hydroxymethyl)-2',4',6'-trimethyl-2',3'-dihydrospiro[cyclopropane-1,5'-inden]-7'(6'H)-one, formaldehyde to produce (R)-6'-hydroxy-3'-(hydroxymethyl)-2',4',6'-trimethylspiro[cyclopropane-1,5'-inden]-7'(6'H)-one, 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"
    ]
}
```
