[
  {
    "molid": "mol2709",
    "smiles": "Cc1ccc(C(=O)C2C(=O)CCCC2=O)c(Cl)c1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "Cc1ccc(C(=O)C2C(=O)CCCC2=O)c(Cl)c1",
        "std_free_energy": -3.7165911197662354,
        "relative_population": 1.0
      },
      {
        "id": "-1_2",
        "charge": -1,
        "smiles": "Cc1ccc(C(=O)[C-]2C(=O)CCCC2=O)c(Cl)c1",
        "std_free_energy": -4.610392093658447,
        "relative_population": 0.9990920541794724
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.83,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Caine"
      }
    ]
  }
]