[
  {
    "molid": "mol31810",
    "smiles": "O=C1NC(=O)C(c2ccccc2)(c2ccccc2)C(=O)N1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C1NC(=O)C(c2ccccc2)(c2ccccc2)C(=O)N1",
        "std_free_energy": -4.703888893127441,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C1[N-]C(=O)C(c2ccccc2)(c2ccccc2)C(=O)N1",
        "std_free_energy": -4.968550205230713,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 7.3,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      }
    ]
  }
]