[
  {
    "molid": "mol33020",
    "smiles": "Cc1cc(Cl)cc(Cl)c1OCC(=O)O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "Cc1cc(Cl)cc(Cl)c1OCC(=O)O",
        "std_free_energy": -2.6018407344818115,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "Cc1cc(Cl)cc(Cl)c1OCC(=O)[O-]",
        "std_free_energy": -10.558331489562988,
        "relative_population": 0.9999999334858306
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.13,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      }
    ]
  }
]