[
  {
    "molid": "mol37948",
    "smiles": "O=C(NCCN(CCNC(=O)c1cc(S(=O)(=O)O)cc(-c2ccccn2)c1O)CCNC(=O)c1cc(S(=O)(=O)O)cc(-c2ccccn2)c1O)c1cc(S(=O)(=O)O)cc(-c2ccccn2)c1O",
    "microspecies": [],
    "macro_pka_values": [
      {
        "pka_value": 10.3199996948242,
        "charge_state_pre": -5,
        "charge_state_post": -6,
        "data_source": "QSARToolbox"
      }
    ]
  }
]