[
  {
    "molid": "mol9249",
    "smiles": "CCCC[As](=O)(O)O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CCCC[As](=O)(O)O",
        "std_free_energy": -2.2128851413726807,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CCCC[As](=O)([O-])O",
        "std_free_energy": -10.498137474060059,
        "relative_population": 1.0
      },
      {
        "id": "-2_1",
        "charge": -2,
        "smiles": "CCCC[As](=O)([O-])[O-]",
        "std_free_energy": -7.096833229064941,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 4.76,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 3.01,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Datawarrior"
      },
      {
        "pka_value": 4.53,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      },
      {
        "pka_value": 4.23000001907349,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 4.13000011444092,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 8.6,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "OCHEM"
      },
      {
        "pka_value": 8.88000011444092,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      },
      {
        "pka_value": 8.90999984741211,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      }
    ]
  }
]