Using tert-butyl (2-hydroxyethyl)carbamate, (4R)-4-((3S,5S,7R,8R,9S,10S,12S,13R,14S,17R)-12-hydroxy-3-(2-((4-((8S,11R,13S,14S,17R)-17-hydroxy-13-methyl-3-oxo-17-(prop-1-yn-1-yl)-2,3,6,7,8,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-11-yl)phenyl)(methyl)amino)ethoxy)-10,13-dimethyl-7-(((4-nitrophenoxy)carbonyl)oxy)hexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-methylpentanoic acid to produce (4R)-4-((3S,5S,7R,8R,9S,10S,12S,13R,14S,17R)-7-(((2-((tert-butoxycarbonyl)amino)ethoxy)carbonyl)oxy)-12-hydroxy-3-(2-((4-((8S,11R,13S,14S,17R)-17-hydroxy-13-methyl-3-oxo-17-(prop-1-yn-1-yl)-2,3,6,7,8,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-11-yl)phenyl)(methyl)amino)ethoxy)-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-methylpentanoic acid, 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"
    ]
}
```
