[
  {
    "molid": "mol1978",
    "smiles": "NC1=Nc2cccc3cccc(c23)N1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "NC1=Nc2cccc3cccc(c23)N1",
        "std_free_energy": -3.8769779205322266,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "NC1=Nc2cccc3cccc(c23)[N-]1",
        "std_free_energy": 10.902772903442383,
        "relative_population": 0.9776498469027768
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 7.6,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Hunt"
      }
    ]
  }
]