[
  {
    "molid": "mol9063",
    "smiles": "NCCC([N+](=O)[O-])[N+](=O)[O-]",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "NCCC([N+](=O)[O-])[N+](=O)[O-]",
        "std_free_energy": -2.909578323364258,
        "relative_population": 1.0
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "[NH3+]CCC([N+](=O)[O-])[N+](=O)[O-]",
        "std_free_energy": -7.528597831726074,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.71,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]