[
  {
    "molid": "mol18758",
    "smiles": "O=c1cc(O)c2ccc(Cl)cc2[nH]1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=c1cc(O)c2ccc(Cl)cc2[nH]1",
        "std_free_energy": -4.102419853210449,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=c1cc([O-])c2ccc(Cl)cc2[nH]1",
        "std_free_energy": -5.248742580413818,
        "relative_population": 0.9987521211796682
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 5.8,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Baltruschat ChEMBL"
      }
    ]
  }
]