[
  {
    "molid": "mol36313",
    "smiles": "O=C(O)Cn1nnc(CCn2nnc(-c3ccccc3)n2)n1",
    "microspecies": [
      {
        "id": "0_2",
        "charge": 0,
        "smiles": "O=C(O)Cn1nnc(CCn2nnc(-c3ccccc3)n2)n1",
        "std_free_energy": -2.7635064125061035,
        "relative_population": 0.9769309643038723
      },
      {
        "id": "-1_1",
        "charge": -1,
        "smiles": "O=C([O-])Cn1nnc(CCn2nnc(-c3ccccc3)n2)n1",
        "std_free_energy": -11.999154090881348,
        "relative_population": 0.9993477752058385
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 3.00999999046326,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
  }
]