[
  {
    "molid": "mol29525",
    "smiles": "O=C(O)[C@@H](O)[C@H](O)[C@H](O)CO",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C(O)[C@@H](O)[C@H](O)[C@H](O)CO",
        "std_free_energy": -3.321718215942383,
        "relative_population": 1.0
      },
      {
        "id": "-1_5",
        "charge": -1,
        "smiles": "O=C([O-])[C@@H](O)[C@H](O)[C@H](O)CO",
        "std_free_energy": -10.285904884338379,
        "relative_population": 0.9999970777292517
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.95,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "AttenGpKa training set"
      }
    ]
  }
]