[
  {
    "molid": "mol32969",
    "smiles": "O=C1C(=O)C(Cl)C(=O)C(=O)C1Cl",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C1C(=O)[C@H](Cl)C(=O)C(=O)[C@H]1Cl",
        "std_free_energy": -0.34571409225463867,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C1C(=O)C(Cl)C(=O)C(=O)[C-]1Cl",
        "std_free_energy": -7.302184581756592,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 1.09,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      }
    ]
  }
]