[
  {
    "molid": "mol12899",
    "smiles": "CC(C(N)=O)S(=O)(=O)NC(N)=O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "C[C@H](C(N)=O)S(=O)(=O)NC(N)=O",
        "std_free_energy": -6.591568946838379,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "C[C@H](C(N)=O)S(=O)(=O)[N-]C(N)=O",
        "std_free_energy": -10.058204650878906,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 5.21,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "Datawarrior"
      },
      {
        "pka_value": 5.21000003814697,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]