[
  {
    "molid": "mol37102",
    "smiles": "ON=Cc1cccc(Br)c1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "ON=Cc1cccc(Br)c1",
        "std_free_energy": -6.871791839599609,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "[O-]N=Cc1cccc(Br)c1",
        "std_free_energy": 2.219480514526367,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 10.2799997329712,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]