[
  {
    "molid": "mol35862",
    "smiles": "CCOC(=O)NC(=O)c1ccccc1C(=O)O",
    "microspecies": [
      {
        "id": "-1_2",
        "charge": -1,
        "smiles": "CCOC(=O)NC(=O)c1ccccc1C(=O)[O-]",
        "std_free_energy": -8.73294448852539,
        "relative_population": 0.992835249342153
      },
      {
        "id": "-2_1",
        "charge": -2,
        "smiles": "CCOC(=O)[N-]C(=O)c1ccccc1C(=O)[O-]",
        "std_free_energy": -2.3515830039978027,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 11.3199996948242,
        "charge_state_pre": -1,
        "charge_state_post": -2,
        "data_source": "QSARToolbox"
      }
    ]
  }
]