[
  {
    "molid": "mol2007",
    "smiles": "O=C(O)c1c(Cl)ccc2cc(Cl)cnc12",
    "microspecies": [
      {
        "id": "0_2",
        "charge": 0,
        "smiles": "O=C(O)c1c(Cl)ccc2cc(Cl)cnc12",
        "std_free_energy": -4.292526721954346,
        "relative_population": 0.9570386851710685
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C([O-])c1c(Cl)ccc2cc(Cl)cnc12",
        "std_free_energy": -11.048476219177246,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 4.34,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      }
    ]
  }
]