[
  {
    "molid": "mol14281",
    "smiles": "NC(=O)CCCCCCCCC(=O)NO",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "NC(=O)CCCCCCCCC(=O)NO",
        "std_free_energy": -6.934910774230957,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "NC(=O)CCCCCCCCC(=O)N[O-]",
        "std_free_energy": 0.6045454740524292,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 9.49,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Datawarrior"
      },
      {
        "pka_value": 9.4899998,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "OCHEM"
      },
      {
        "pka_value": 9.48999977111816,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]