[
  {
    "molid": "mol10426",
    "smiles": "Cc1cc(=O)c(C(=O)O)c(C)o1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "Cc1cc(=O)c(C(=O)O)c(C)o1",
        "std_free_energy": -2.9688777923583984,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "Cc1cc(=O)c(C(=O)[O-])c(C)o1",
        "std_free_energy": -9.21401596069336,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.36,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]