[
  {
    "molid": "mol33927",
    "smiles": "CNC(=O)Oc1ccccc1OC(=O)NC",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CNC(=O)Oc1ccccc1OC(=O)NC",
        "std_free_energy": -6.6160078048706055,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "C[N-]C(=O)Oc1ccccc1OC(=O)NC",
        "std_free_energy": 4.9956817626953125,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 12.9899997711182,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]