Using (R)-3-((4-(3-(2-((tert-butoxycarbonyl)amino)-2-phenylethyl)-1-(2-fluoro-6-(trifluoromethyl)benzyl)-6-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)piperazin-1-yl)methyl)benzoic acid, ethyl 4-aminobutanoate to produce ethyl (R)-4-(3-((4-(3-(2-((tert-butoxycarbonyl)amino)-2-phenylethyl)-1-(2-fluoro-6-(trifluoromethyl)benzyl)-6-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)piperazin-1-yl)methyl)benzamido)butanoate, 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"
    ]
}
```
