[
  {
    "molid": "mol9724",
    "smiles": "Cc1ccc(C(=O)O)[nH]1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "Cc1ccc(C(=O)O)[nH]1",
        "std_free_energy": -4.788021087646484,
        "relative_population": 1.0
      },
      {
        "id": "-1_2",
        "charge": -1,
        "smiles": "Cc1ccc(C(=O)[O-])[nH]1",
        "std_free_energy": -8.796807289123535,
        "relative_population": 0.9999998738858622
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 4.88,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 5.0,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]