[
  {
    "molid": "mol25199",
    "smiles": "O=[N+]([O-])c1cc[n+](O)cc1Br",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=[N+]([O-])c1cc[n+]([O-])cc1Br",
        "std_free_energy": -5.096032619476318,
        "relative_population": 1.0
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "O=[N+]([O-])c1cc[n+](O)cc1Br",
        "std_free_energy": 12.555768013000488,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": -1.84,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "AttenGpKa training set"
      }
    ]
  }
]