[
  {
    "molid": "mol12928",
    "smiles": "Cc1ccccc1S(=O)O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "Cc1ccccc1[S@](=O)O",
        "std_free_energy": -0.897835910320282,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "Cc1ccccc1[S@](=O)[O-]",
        "std_free_energy": -12.6664400100708,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 1.47,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Datawarrior"
      }
    ]
  }
]