[
  {
    "molid": "mol2998",
    "smiles": "O=C(O)c1ccc(-c2nn(C(=O)c3c(Cl)cccc3Cl)c3ccccc23)cc1",
    "microspecies": [
      {
        "id": "0_2",
        "charge": 0,
        "smiles": "O=C(O)c1ccc(-c2nn(C(=O)c3c(Cl)cccc3Cl)c3ccccc23)cc1",
        "std_free_energy": -3.7949841022491455,
        "relative_population": 0.9999896996892887
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C([O-])c1ccc(-c2nn(C(=O)c3c(Cl)cccc3Cl)c3ccccc23)cc1",
        "std_free_energy": -10.013848304748535,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.2,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Novartis"
      }
    ]
  }
]