[
  {
    "molid": "mol37816",
    "smiles": "O=C(O)[C@H]1CC[C@H]2CCC[C@H]21",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C(O)[C@H]1CC[C@H]2CCC[C@H]21",
        "std_free_energy": -4.060564041137695,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C([O-])[C@H]1CC[C@H]2CCC[C@H]21",
        "std_free_energy": -8.450251579284668,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 6.38000011444092,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]