[
  {
    "molid": "mol509",
    "smiles": "c1ccc(CSc2nc3ccccc3[nH]2)cc1",
    "microspecies": [
      {
        "id": "0_1",
        "charge": 0,
        "smiles": "c1ccc(CSc2nc3ccccc3[nH]2)cc1",
        "std_free_energy": -6.771028518676758,
        "relative_population": 1.0
      },
      {
        "id": "1_1",
        "charge": 1,
        "smiles": "c1ccc(CSc2[nH]c3ccccc3[nH+]2)cc1",
        "std_free_energy": -0.29331174492836,
        "relative_population": 1.0
      }
    ],
    "macro_pka_values": [
      {
        "pka_value": 4.2,
        "charge_state_pre": 1,
        "charge_state_post": 0,
        "data_source": "Hunt"
      }
    ]
  }
]