[
  {
    "molid": "mol7792",
    "smiles": "c1ccc(-c2cc3cccc-3on2)cc1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "c1ccc(-c2cc3cccc-3on2)cc1",
        "std_free_energy": -6.044005393981934,
        "relative_population": 1.0
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "c1ccc(-c2cc3cccc-3o[nH+]2)cc1",
        "std_free_energy": 3.4726924896240234,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": -4.31,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]