[
  {
    "molid": "mol3821",
    "smiles": "Nc1cccc[n+]1[O-]",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "Nc1cccc[n+]1[O-]",
        "std_free_energy": -8.217838287353516,
        "relative_population": 1.0
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "Nc1cccc[n+]1O",
        "std_free_energy": 0.001409284770488739,
        "relative_population": 0.9984867716872909
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.67,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]