[
  {
    "molid": "mol35789",
    "smiles": "O=[N+]([O-])Nc1ccccn1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=[N+]([O-])Nc1ccccn1",
        "std_free_energy": -6.83072566986084,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=[N+]([O-])[N-]c1ccccn1",
        "std_free_energy": -7.349205017089844,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 5.90000009536743,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]