[
  {
    "molid": "mol30248",
    "smiles": "C[N+]1=CCCc2ccccc21",
    "microspecies": [
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "C[N+]1=CCCc2ccccc21",
        "std_free_energy": -5.696076393127441,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 7.9,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "AttenGpKa training set"
      }
    ]
  }
]