[
  {
    "molid": "mol33898",
    "smiles": "O=c1ccc2cc3ccoc3c(O)c2o1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=c1ccc2cc3ccoc3c(O)c2o1",
        "std_free_energy": -3.995527744293213,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=c1ccc2cc3ccoc3c([O-])c2o1",
        "std_free_energy": -3.1914267539978027,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 8.02000045776367,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]