[
  {
    "molid": "mol2710",
    "smiles": "O=C1CCCC(=O)C1C(=O)c1ccccc1Cl",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C1CCCC(=O)C1C(=O)c1ccccc1Cl",
        "std_free_energy": -4.266080379486084,
        "relative_population": 1.0
      },
      {
        "id": "-1_2",
        "charge": -1,
        "smiles": "O=C1CCCC(=O)[C-]1C(=O)c1ccccc1Cl",
        "std_free_energy": -4.812573432922363,
        "relative_population": 0.9988891050223466
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.81,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Caine"
      }
    ]
  }
]