{
  "meta": {
    "disclaimer": "Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated. We may limit or otherwise restrict your access to the API in line with our Terms of Service.",
    "terms": "https://open.fda.gov/terms/",
    "license": "https://open.fda.gov/license/",
    "last_updated": "2025-09-19",
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          "smiles": "C[Si](c1ccccc1)(c2ccccc2)O[Si](C)(c3ccccc3)O[Si](C)(c4ccccc4)O[Si](C)(c5ccccc5)c6ccccc6",
          "formula": "C40H42O3Si4",
          "atropisomerism": "No",
          "charge": 0,
          "count": 1,
          "stereochemistry": "MIXED",
          "count_amount": {
            "type": "MOL RATIO",
            "average": 1,
            "units": "MOL RATIO",
            "uuid": "bbcb1ef5-3e9e-4701-8730-2e295ab12c88"
          },
          "defined_stereo": 0,
          "ez_centers": 0,
          "molecular_weight": "683.1027",
          "optical_activity": "UNSPECIFIED",
          "stereo_centers": 2
        }
      ],
      "definition_level": "COMPLETE",
      "uuid": "fde0731e-4d9b-4e23-9d69-4193c5f3f464",
      "version": "4",
      "structure": {
        "id": "bf568234-62df-43ef-aa6a-65edc63d7c75",
        "molfile": "\n  Marvin  01132109532D          \n\n 47 52  0  0  0  0            999 V2000\n   12.7290   -9.5035    0.0000 Si  0  0  0  0  0  0  0  0  0  0  0  0\n   13.3610  -10.0339    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.1362   -9.7516    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.7683  -10.2819    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.6250  -11.0944    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.8497  -11.3766    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.2177  -10.8464    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   12.0970  -10.0339    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   11.3218   -9.7517    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.6897  -10.2819    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   10.8330  -11.0944    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   11.6083  -11.3766    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   12.2403  -10.8464    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.2593   -8.8715    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   12.3480   -8.4569    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   12.8784   -7.8249    0.0000 Si  0  0  0  0  0  0  0  0  0  0  0  0\n   12.8784   -6.9999    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.5929   -6.5875    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.5929   -5.7624    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   12.8784   -5.3499    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   12.1639   -5.7624    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   12.1639   -6.5875    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   12.1639   -7.4124    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.5929   -8.2374    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   14.3074   -7.8249    0.0000 Si  0  0  0  0  0  0  0  0  0  0  0  0\n   15.0218   -8.2374    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   15.7363   -7.8249    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.4507   -8.2374    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.4507   -9.0624    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   15.7363   -9.4749    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   15.0218   -9.0624    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   15.0218   -7.4124    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.3074   -6.7112    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   14.9393   -6.1808    0.0000 Si  0  0  0  0  0  0  0  0  0  0  0  0\n   15.7145   -6.4630    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.3466   -5.9328    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   17.1218   -6.2149    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   17.2651   -7.0273    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   16.6331   -7.5576    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   15.8578   -7.2755    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.7961   -5.3684    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   15.4280   -4.8381    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   15.2847   -4.0256    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.5095   -3.7435    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   13.8776   -4.2737    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.0208   -5.0862    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   14.3757   -5.7135    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0  0  0  0\n  2  3  1  0  0  0  0\n  3  4  2  0  0  0  0\n  4  5  1  0  0  0  0\n  6  5  2  0  0  0  0\n  7  6  1  0  0  0  0\n  2  7  2  0  0  0  0\n  1  8  1  0  0  0  0\n  8  9  1  0  0  0  0\n  9 10  2  0  0  0  0\n 10 11  1  0  0  0  0\n 12 11  2  0  0  0  0\n 13 12  1  0  0  0  0\n  8 13  2  0  0  0  0\n  1 14  1  0  0  0  0\n  1 15  1  0  0  0  0\n 15 16  1  0  0  0  0\n 16 17  1  0  0  0  0\n 17 18  1  0  0  0  0\n 18 19  2  0  0  0  0\n 19 20  1  0  0  0  0\n 21 20  2  0  0  0  0\n 22 21  1  0  0  0  0\n 17 22  2  0  0  0  0\n 16 23  1  0  0  0  0\n 16 24  1  0  0  0  0\n 24 25  1  0  0  0  0\n 25 26  1  0  0  0  0\n 26 27  1  0  0  0  0\n 27 28  2  0  0  0  0\n 28 29  1  0  0  0  0\n 30 29  2  0  0  0  0\n 31 30  1  0  0  0  0\n 26 31  2  0  0  0  0\n 25 32  1  0  0  0  0\n 25 33  1  0  0  0  0\n 33 34  1  0  0  0  0\n 34 35  1  0  0  0  0\n 35 36  1  0  0  0  0\n 36 37  2  0  0  0  0\n 37 38  1  0  0  0  0\n 39 38  2  0  0  0  0\n 40 39  1  0  0  0  0\n 35 40  2  0  0  0  0\n 34 41  1  0  0  0  0\n 41 42  1  0  0  0  0\n 42 43  2  0  0  0  0\n 43 44  1  0  0  0  0\n 45 44  2  0  0  0  0\n 46 45  1  0  0  0  0\n 41 46  2  0  0  0  0\n 34 47  1  0  0  0  0\nM  END",
        "smiles": "C[Si](c1ccccc1)(c2ccccc2)O[Si](C)(c3ccccc3)O[Si](C)(c4ccccc4)O[Si](C)(c5ccccc5)c6ccccc6",
        "formula": "C40H42O3Si4",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ACHIRAL",
        "defined_stereo": 0,
        "ez_centers": 0,
        "molecular_weight": "683.1027",
        "optical_activity": "UNSPECIFIED",
        "references": [
          "1e2bec9d-fc89-412f-8737-2b3f81e55c03",
          "c2aa85f5-f59c-465b-9f6b-c5569a0db16d"
        ],
        "stereo_centers": 2
      },
      "unii": "Q0A43X3I6V"
    }
  ]
}