[
  {
    "molid": "mol22412",
    "smiles": "O=C(O)C[C@H]1CC[C@H]2OC(=O)C[C@@H]12",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C(O)C[C@H]1CC[C@H]2OC(=O)C[C@@H]12",
        "std_free_energy": -3.765324831008911,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C([O-])C[C@H]1CC[C@H]2OC(=O)C[C@@H]12",
        "std_free_energy": -8.677520751953125,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 4.88,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "AttenGpKa training set"
      }
    ]
  }
]