[
  {
    "molid": "mol33486",
    "smiles": "O=C1OC(CO)C(O)C(O)=C1O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C1O[C@@H](CO)[C@H](O)C(O)=C1O",
        "std_free_energy": -3.2339982986450195,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C1O[C@@H](CO)[C@H](O)C([O-])=C1O",
        "std_free_energy": -7.729887008666992,
        "relative_population": 0.9267839695813211
      },
      {
        "id": "-1_4",
        "charge": -1,
        "smiles": "O=C1O[C@@H](CO)[C@H](O)C(O)=C1[O-]",
        "std_free_energy": -5.191169738769531,
        "relative_population": 0.07318593267931614
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 4.15,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      }
    ]
  }
]