[
  {
    "molid": "mol33957",
    "smiles": "[O-][n+]1c2ccccc2cc2ccccc21",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "[O-][n+]1c2ccccc2cc2ccccc21",
        "std_free_energy": -5.994002342224121,
        "relative_population": 1.0
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "O[n+]1c2ccccc2cc2ccccc21",
        "std_free_energy": 5.426021099090576,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 1.37000000476837,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "QSARToolbox"
      }
    ]
  }
]