[
  {
    "molid": "mol37101",
    "smiles": "ON=Cc1ccc(Br)cc1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "ON=Cc1ccc(Br)cc1",
        "std_free_energy": -6.693238735198975,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "[O-]N=Cc1ccc(Br)cc1",
        "std_free_energy": 2.5857465267181396,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 10.3299999237061,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]