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        "molfile": "\n  Marvin  01132102032D          \n\n  7  0  0  0  0  0            999 V2000\n   -3.5667    0.4708    0.0000 Fe  0  1  0  0  0  0  0  0  0  0  0  0\n   -1.4750    0.5667    0.0000 O   0  6  0  0  0  0  0  0  0  0  0  0\n    2.8958    0.7500    0.0000 Fe  0  2  0  0  0  0  0  0  0  0  0  0\n    3.9875    0.8125    0.0000 O   0  6  0  0  0  0  0  0  0  0  0  0\n   -1.4750    0.5667    0.0000 O   0  6  0  0  0  0  0  0  0  0  0  0\n   -1.4750    0.5667    0.0000 O   0  6  0  0  0  0  0  0  0  0  0  0\n   -3.5667    0.4708    0.0000 Fe  0  1  0  0  0  0  0  0  0  0  0  0\nM  CHG  7   1   3   2  -2   3   2   4  -2   5  -2   6  -2   7   3\nM  STY  4   1 GEN   2 GEN   3 MUL   4 MUL\nM  SPL  2   3   2   4   2\nM  SAL   1  2   3   4\nM  SDI   1  4    2.4758    0.3300    2.4758    1.2325\nM  SDI   1  4    4.4075    1.2325    4.4075    0.3300\nM  SAL   2  5   1   2   7   5   6\nM  SDI   2  4   -3.9867    0.0508   -3.9867    0.9867\nM  SDI   2  4   -1.0550    0.9867   -1.0550    0.0508\nM  SCN  1   3 HT \nM  SAL   3  2   1   7\nM  SPA   3  1   1\nM  SDI   3  4   -3.9867    0.0508   -3.9867    0.8908\nM  SDI   3  4   -3.1467    0.8908   -3.1467    0.0508\nM  SMT   3 2\nM  SCN  1   4 HT \nM  SAL   4  3   2   5   6\nM  SPA   4  1   2\nM  SDI   4  4   -1.8950    0.1467   -1.8950    0.9867\nM  SDI   4  4   -1.0550    0.9867   -1.0550    0.1467\nM  SMT   4 3\nM  END",
        "smiles": "[Fe+2].[Fe+3].[Fe+3].[O-2].[O-2].[O-2].[O-2]",
        "formula": "3Fe.4O",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "231.5331",
        "optical_activity": "NONE",
        "references": [
          "166ce12b-ffb3-401d-8b5e-788a7c3052e1",
          "cdf9b842-59b6-4ee7-902e-7cb284362a7b"
        ],
        "stereo_centers": 0
      },
      "unii": "XM0M87F357"
    }
  ]
}