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    "microspecies": [
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        "id": "-1_9",
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        "smiles": "O=C(N[C@@H](CCCCNC(=O)c1cccc(O)c1O)C(=O)NCCCCNC(=O)c1cccc(O)c1O)c1cccc(O)c1[O-]",
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    "macro_pka_values": [
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        "pka_value": 6.67000007629395,
        "charge_state_pre": 0,
        "charge_state_post": -1,
        "data_source": "QSARToolbox"
      }
    ]
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]