[
  {
    "molid": "mol34988",
    "smiles": "CC(=O)c1ccc(O)cc1[O]",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CC(=O)c1ccc(O)cc1[O]",
        "std_free_energy": -3.9248597621917725,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CC(=O)c1ccc([O-])cc1[O]",
        "std_free_energy": -4.562638759613037,
        "relative_population": 0.9999999999037719
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 5.90000009536743,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]