[
  {
    "molid": "mol7147",
    "smiles": "CCCCNc1ncc(Br)cn1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "CCCCNc1ncc(Br)cn1",
        "std_free_energy": -7.578366279602051,
        "relative_population": 1.0
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "CCCCNc1ncc(Br)c[nH+]1",
        "std_free_energy": 1.4992305040359497,
        "relative_population": 0.3600699658024121
      },
      {
        "id": "1_2",
        "charge": 1,
        "smiles": "CCCC[NH2+]c1ncc(Br)cn1",
        "std_free_energy": 0.9241700172424316,
        "relative_population": 0.6399300341975879
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 2.19,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]