Refactor the unstructured text into a valid JSON dictionary. The key names follow the Darwin Core Archive Standard. If a key lacks content, then insert an empty string. Fill in the following JSON structure as required: {"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}
    "an immigrant from the west and southwest." -F  Asterales E 2+@   ST.CLAIR %So L     X L. silphium laciniatum y)    z06iV Asteraceae  1256476 8 k`     /k+   charles k. dodge  &2: Michigan   laciniatum Bu0    +&sA nited States  Ei Silphium 
{"catalogNumber": "1256476", "order": "Asterales", "family": "Asteraceae", "scientificName": "Silphium laciniatum", "scientificNameAuthorship": "L.", "genus": "Silphium", "subgenus": "", "specificEpithet": "laciniatum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles K. Dodge", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "\"An immigrant from the west and southwest.\"", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "St. Clair", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}