{
  "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": "2026-09-09",
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        "molfile": "N-(1-Oxohexadecyl)-L-histidyl-D-phenylalanyl-L-argininamide\n   JSDraw212072319102D\n\n 50 51  0  0  1  0              0 V2000\n   25.6386  -12.3681    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   24.8586  -13.7192    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   27.1986  -12.3681    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   24.8586  -11.0170    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   27.9786  -13.7192    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   25.6386   -9.6661    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   23.2986  -11.0170    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   29.5386  -13.7192    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   27.1986  -15.0701    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   24.8586   -8.3151    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   30.3186  -15.0701    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   30.3186  -12.3681    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   23.2986   -8.3151    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   25.6386   -6.9641    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   31.8786  -12.3681    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   22.5186   -6.9641    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   27.1986   -6.9641    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   24.8586   -5.6131    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   32.6586  -11.0170    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   32.6586  -13.7192    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n   20.9586   -6.9641    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   34.2186  -11.0170    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   20.1786   -5.6131    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   34.9986   -9.6661    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   18.6186   -5.6131    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   36.5586   -9.6661    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   17.8386   -6.9641    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   17.8386   -4.2621    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   37.3386   -8.3151    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   38.8986   -8.3151    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   39.6786   -6.9641    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   41.2386   -6.9641    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   42.0186   -5.6131    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   43.5786   -5.6131    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   44.3586   -4.2621    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   45.9186   -4.2621    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   46.6986   -2.9110    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   48.2586   -2.9110    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   49.0386   -1.5600    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   23.2986  -13.7192    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   22.5186  -15.0701    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   22.5186  -12.3681    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   20.9586  -15.0701    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   20.9586  -12.3681    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   20.1786  -13.7192    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   29.5386  -16.4210    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   27.9873  -16.5841    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n   30.1731  -17.8463    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   27.6629  -18.1101    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n   29.0138  -18.8901    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  6  0  0  0\n  1  3  1  0  0  0  0\n  1  4  1  0  0  0  0\n  2 40  1  0  0  0  0\n  3  5  1  0  0  0  0\n  4  6  1  0  0  0  0\n  4  7  2  0  0  0  0\n  5  8  1  0  0  0  0\n  5  9  2  0  0  0  0\n  6 10  1  0  0  0  0\n  8 11  1  1  0  0  0\n  8 12  1  0  0  0  0\n 10 13  1  1  0  0  0\n 10 14  1  0  0  0  0\n 11 46  1  0  0  0  0\n 12 15  1  0  0  0  0\n 13 16  1  0  0  0  0\n 14 17  1  0  0  0  0\n 14 18  2  0  0  0  0\n 15 19  1  0  0  0  0\n 15 20  2  0  0  0  0\n 16 21  1  0  0  0  0\n 19 22  1  0  0  0  0\n 21 23  1  0  0  0  0\n 22 24  1  0  0  0  0\n 23 25  1  0  0  0  0\n 24 26  1  0  0  0  0\n 25 27  2  0  0  0  0\n 25 28  1  0  0  0  0\n 26 29  1  0  0  0  0\n 29 30  1  0  0  0  0\n 30 31  1  0  0  0  0\n 31 32  1  0  0  0  0\n 32 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  1  0  0  0  0\n 37 38  1  0  0  0  0\n 38 39  1  0  0  0  0\n 40 41  2  0  0  0  0\n 40 42  1  0  0  0  0\n 41 43  1  0  0  0  0\n 42 44  2  0  0  0  0\n 43 45  2  0  0  0  0\n 44 45  1  0  0  0  0\n 46 47  2  0  0  0  0\n 46 48  1  0  0  0  0\n 47 49  1  0  0  0  0\n 48 50  1  0  0  0  0\n 49 50  2  0  0  0  0\nM  END",
        "smiles": "CCCCCCCCCCCCCCCC(=O)N[C@@H](Cc1cnc[nH]1)C(=O)N[C@H](Cc2ccccc2)C(=O)N[C@@H](CCCNC(=N)N)C(=O)N",
        "formula": "C37H61N9O4",
        "atropisomerism": "No",
        "charge": 0,
        "count": 1,
        "stereochemistry": "ABSOLUTE",
        "defined_stereo": 3,
        "ez_centers": 0,
        "molecular_weight": "695.9396",
        "optical_activity": "UNSPECIFIED",
        "references": [
          "2821b10f-f88f-4f8d-9a48-f17e5c77da0c",
          "d3d56f11-5fdd-493f-8130-739a39c50aab"
        ],
        "stereo_centers": 3
      },
      "modifications": {
        "uuid": "aae43cf2-d6d7-4307-b3e6-c77625e173f7"
      },
      "unii": "55HZC7YQA7"
    }
  ]
}