Using aceticanhydride, methyl (1aR,1bR,2S,5aS,6aS)-1a-(hydroxymethyl)-2-((methylcarbamoyl)oxy)-1a,1b,2,5a,6,6a-hexahydrooxireno[2',3':4,5]cyclopenta[1,2-c]pyran-5-carboxylate to produce methyl 2H-pyran-4-carboxylate, 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"
    ]
}
```
