Using 6-methylspiro[chromane-2,4'-piperidin]-4-one, (2-((tert-butoxycarbonyl)amino)-2-methylpropanoyl)-D-tryptophan to produce tert-butyl (R)-(1-((3-(1H-indol-3-yl)-1-(6-methyl-4-oxospiro[chromane-2,4'-piperidin]-1'-yl)-1-oxopropan-2-yl)amino)-2-methyl-1-oxopropan-2-yl)carbamate, 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"
    ]
}
```
