[
  {
    "molid": "mol11987",
    "smiles": "CC(=O)NCC(=O)NCC(=O)NCC(=O)NC(Cc1c[nH]cn1)C(=O)O",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CC(=O)NCC(=O)NCC(=O)NCC(=O)N[C@@H](Cc1c[nH]c[nH+]1)C(=O)[O-]",
        "std_free_energy": -10.4454345703125,
        "relative_population": 0.9992011638584425
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "CC(=O)NCC(=O)NCC(=O)NCC(=O)N[C@@H](Cc1c[nH]c[nH+]1)C(=O)O",
        "std_free_energy": -1.186346411705017,
        "relative_population": 1.0
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "CC(=O)NCC(=O)NCC(=O)NCC(=O)N[C@@H](Cc1c[nH]cn1)C(=O)[O-]",
        "std_free_energy": -9.670761108398438,
        "relative_population": 0.9999998694794
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 7.21,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "IUPAC digitized pKa"
      },
      {
        "pka_value": 3.16,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]