[
  {
    "molid": "mol9490",
    "smiles": "ON=Cc1cccs1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "ON=Cc1cccs1",
        "std_free_energy": -6.8087358474731445,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "[O-]N=Cc1cccs1",
        "std_free_energy": 2.254749298095703,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 10.76,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]