[
  {
    "molid": "mol21842",
    "smiles": "Cc1cncnc1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "Cc1cncnc1",
        "std_free_energy": -10.290435791015625,
        "relative_population": 1.0
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "Cc1cnc[nH+]c1",
        "std_free_energy": 0.8890189528465271,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 1.91,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "Organic Oxygen Acids and Nitrogen Bases"
      }
    ]
  }
]