{
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    "id": "opera_data",
    "title": "OPERA experimental training and validation data",
    "description": "Original OPERA endpoint collections for environmental fate, physicochemical properties, ADME, and toxicity. Source SDF files retain experimental endpoints, descriptors, and original partition fields.",
    "domain": "small_molecules",
    "category": "physicochemical",
    "application": "physicochemical/environmental_fate",
    "evidence_tier": "Q2_established",
    "status": "downloaded",
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    "license_class": "unverified",
    "source_url": "https://github.com/kmansouri/OPERA",
    "aliases": [],
    "references": [
      {
        "title": "OPERA experimental training and validation data publication",
        "url": "https://doi.org/10.1186/s13321-018-0263-1"
      }
    ],
    "known_issues": [
      "Experimental labels and model predictions appear together in some source files; select the observed endpoint columns for supervised experimental-property tasks.",
      "Each endpoint includes source units and train/test membership. Structure standardization varies across historical releases."
    ],
    "units": null,
    "task_definitions": [],
    "components": []
  },
  "links": {
    "studies": [
      {
        "title": "OPERA experimental training and validation data publication",
        "url": "https://doi.org/10.1186/s13321-018-0263-1"
      }
    ],
    "original_data": "https://github.com/kmansouri/OPERA",
    "redistributor": null,
    "built_on": {
      "name": "US EPA curated data (PHYSPROP and others)",
      "url": "https://github.com/kmansouri/OPERA"
    },
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      },
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      },
      {
        "name": "LICENSE",
        "url": "https://raw.githubusercontent.com/kmansouri/OPERA/01b07c769dd86eadb71843e057783a64a364c885/LICENSE"
      }
    ]
  },
  "modalities": [
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      "modality": "source files",
      "path": "files/OPERA_Data.zip",
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      "kind": "file",
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  "quality": {
    "grade": "unmeasured",
    "tags": [
      {
        "key": "origin",
        "level": "info",
        "label": "experiment",
        "detail": "Labels are measured in a lab."
      }
    ]
  },
  "tables": []
}