[
  {
    "molid": "mol37208",
    "smiles": "O=[N+]([O-])c1ccc([As](=O)(O)O)c2ccccc12",
    "microspecies": [
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=[N+]([O-])c1ccc([As](=O)([O-])O)c2ccccc12",
        "std_free_energy": -10.373498916625977,
        "relative_population": 1.0
      },
      {
        "id": "-2_1",
        "charge": -2,
        "smiles": "O=[N+]([O-])c1ccc([As](=O)([O-])[O-])c2ccccc12",
        "std_free_energy": -10.347071647644043,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 7.86999988555908,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      }
    ]
  }
]