[
  {
    "molid": "mol19495",
    "smiles": "O=[N+]([O-])C1=Cc2ccccc2OC1Nc1ccccc1[N+](=O)[O-]",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=[N+]([O-])C1=Cc2ccccc2O[C@H]1Nc1ccccc1[N+](=O)[O-]",
        "std_free_energy": -6.199077606201172,
        "relative_population": 1.0
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "O=[N+]([O-])C1=Cc2ccccc2O[C@H]1[NH2+]c1ccccc1[N+](=O)[O-]",
        "std_free_energy": 10.054947853088379,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": -0.26,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "Baltruschat ChEMBL"
      }
    ]
  }
]