[
  {
    "molid": "mol34984",
    "smiles": "CCC(C(=O)O)[As](=O)(O)O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CC[C@@H](C(=O)O)[As](=O)(O)O",
        "std_free_energy": -1.5625184774398804,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CC[C@@H](C(=O)O)[As](=O)([O-])O",
        "std_free_energy": -8.085177421569824,
        "relative_population": 0.303208893863666
      },
      {
        "id": "-1_2",
        "charge": -1,
        "smiles": "CC[C@@H](C(=O)[O-])[As](=O)(O)O",
        "std_free_energy": -8.917241096496582,
        "relative_population": 0.696791106136334
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.00999999046326,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]