[
  {
    "molid": "mol20349",
    "smiles": "O=C(/C=C/c1ccc(CN(CCO)CCc2c[nH]c3ccccc23)cc1)NO",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "O=C(/C=C/c1ccc(CN(CCO)CCc2c[nH]c3ccccc23)cc1)NO",
        "std_free_energy": -5.131573677062988,
        "relative_population": 0.8852664380099147
      },
      {
        "id": "0_2",
        "charge": 0,
        "smiles": "O=C(/C=C/c1ccc(C[NH+](CCO)CCc2c[nH]c3ccccc23)cc1)N[O-]",
        "std_free_energy": -3.0882976055145264,
        "relative_population": 0.11473356199008537
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "O=C(/C=C/c1ccc(C[NH+](CCO)CCc2c[nH]c3ccccc23)cc1)NO",
        "std_free_energy": -8.512338638305664,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 7.5,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "Baltruschat ChEMBL"
      }
    ]
  }
]