[
  {
    "molid": "mol13953",
    "smiles": "CC(=O)N1CS(=O)(=O)CC1C(=O)O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CC(=O)N1CS(=O)(=O)C[C@@H]1C(=O)O",
        "std_free_energy": -1.7683846950531006,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CC(=O)N1CS(=O)(=O)C[C@@H]1C(=O)[O-]",
        "std_free_energy": -11.71544075012207,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.23,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Datawarrior"
      }
    ]
  }
]