[
  {
    "molid": "mol38572",
    "smiles": "CC1(C(=O)O)CC(C)(C(=O)O)CC(C)(C(=O)O)C1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "C[C@]1(C(=O)O)C[C@](C)(C(=O)O)C[C@@](C)(C(=O)O)C1",
        "std_free_energy": -2.4122395515441895,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "C[C@]1(C(=O)[O-])C[C@](C)(C(=O)O)C[C@](C)(C(=O)O)C1",
        "std_free_energy": -7.1062726974487305,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.29999995231628,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]