Using (S)-6-azaspiro[2.5]octan-4-ol, 2-((3S,6S)-7-((benzyloxy)carbonyl)-6-methyl-5-oxohexahydro-5H-oxazolo[3,2-a]pyrazin-3-yl)acetic acid to produce benzyl (3S,6S)-3-(2-((S)-4-hydroxy-6-azaspiro[2.5]octan-6-yl)-2-oxoethyl)-6-methyl-5-oxohexahydro-7H-oxazolo[3,2-a]pyrazine-7-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"
    ]
}
```
