[
  {
    "molid": "mol35027",
    "smiles": "CC(C)(C)OC(=O)NC(CO)C(=O)O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CC(C)(C)OC(=O)N[C@H](CO)C(=O)O",
        "std_free_energy": -3.2749996185302734,
        "relative_population": 1.0
      },
      {
        "id": "-1_3",
        "charge": -1,
        "smiles": "CC(C)(C)OC(=O)N[C@H](CO)C(=O)[O-]",
        "std_free_energy": -10.163408279418945,
        "relative_population": 0.9999906920076829
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.61999988555908,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]