[
  {
    "molid": "mol4238",
    "smiles": "Cn1ccsc1=N",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "Cn1ccsc1=N",
        "std_free_energy": -1.8150134086608887,
        "relative_population": 1.0
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "Cn1ccsc1=[NH2+]",
        "std_free_energy": -8.458556175231934,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 9.61,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "IUPAC digitized pKa"
      }
    ]
  }
]