[
  {
    "molid": "mol21766",
    "smiles": "N#Cc1cccc(OCC(=O)O)c1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "N#Cc1cccc(OCC(=O)O)c1",
        "std_free_energy": -2.608458995819092,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "N#Cc1cccc(OCC(=O)[O-])c1",
        "std_free_energy": -11.269594192504883,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.03,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Organic Oxygen Acids and Nitrogen Bases"
      },
      {
        "pka_value": 3.02999997138977,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 3.29999995231628,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]