[
  {
    "molid": "mol11572",
    "smiles": "CCC(C(=O)O)(C(=O)O)c1ccc(Cl)cc1",
    "microspecies": [
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CCC(C(=O)[O-])(C(=O)O)c1ccc(Cl)cc1",
        "std_free_energy": -9.807889938354492,
        "relative_population": 1.0
      },
      {
        "id": "-2_1",
        "charge": -2,
        "smiles": "CCC(C(=O)[O-])(C(=O)[O-])c1ccc(Cl)cc1",
        "std_free_energy": -11.404322624206543,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 6.86,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 6.9,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]