[
  {
    "molid": "mol33792",
    "smiles": "O=c1ccc2c(O)c3ccoc3cc2o1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=c1ccc2c(O)c3ccoc3cc2o1",
        "std_free_energy": -2.7211127281188965,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=c1ccc2c([O-])c3ccoc3cc2o1",
        "std_free_energy": -4.709723949432373,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 7.96999979019165,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]