[
  {
    "molid": "mol650",
    "smiles": "O=C(O)C1(C(=O)Nc2ccc(Cl)cc2Cl)CC1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C(O)C1(C(=O)Nc2ccc(Cl)cc2Cl)CC1",
        "std_free_energy": -3.4743998050689697,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C([O-])C1(C(=O)Nc2ccc(Cl)cc2Cl)CC1",
        "std_free_energy": -10.021553039550781,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.5,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Hunt"
      }
    ]
  }
]