[
  {
    "molid": "mol2708",
    "smiles": "COc1ccc(C(=O)C2C(=O)CCCC2=O)c(Cl)c1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "COc1ccc(C(=O)C2C(=O)CCCC2=O)c(Cl)c1",
        "std_free_energy": -3.9872288703918457,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "COc1ccc(C(=O)[C-]2C(=O)CCCC2=O)c(Cl)c1",
        "std_free_energy": -3.7928121089935303,
        "relative_population": 0.9980050714402972
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 4.09,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Caine"
      }
    ]
  }
]