[
  {
    "molid": "mol35367",
    "smiles": "CCCCCCCc1ccc(C(=O)c2cccc(C(=O)O)c2)cc1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CCCCCCCc1ccc(C(=O)c2cccc(C(=O)O)c2)cc1",
        "std_free_energy": -3.1606054306030273,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CCCCCCCc1ccc(C(=O)c2cccc(C(=O)[O-])c2)cc1",
        "std_free_energy": -9.248550415039062,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 4.82999992370606,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]