[
  {
    "molid": "mol35456",
    "smiles": "Cc1cc(/N=N/c2cccc3c(S(=O)(=O)O)cccc23)c(C)cc1O",
    "microspecies": [
      {
        "id": "-1_2",
        "charge": -1,
        "smiles": "Cc1cc(/N=N/c2cccc3c(S(=O)(=O)[O-])cccc23)c(C)cc1O",
        "std_free_energy": -9.284632682800293,
        "relative_population": 0.9999269793216545
      },
      {
        "id": "-2_1",
        "charge": -2,
        "smiles": "Cc1cc(/N=N/c2cccc3c(S(=O)(=O)[O-])cccc23)c(C)cc1[O-]",
        "std_free_energy": -1.1600816249847412,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 8.0,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      }
    ]
  }
]