[
  {
    "molid": "mol10896",
    "smiles": "O=C(O)C1=C(C(=O)O)C2CCC1C2",
    "microspecies": [
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C([O-])C1=C(C(=O)O)[C@@H]2CC[C@H]1C2",
        "std_free_energy": -9.112733840942383,
        "relative_population": 1.0
      },
      {
        "id": "-2_1",
        "charge": -2,
        "smiles": "O=C([O-])C1=C(C(=O)[O-])[C@H]2CC[C@@H]1C2",
        "std_free_energy": -11.755098342895508,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.79999995231628,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      }
    ]
  }
]