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": ""}
Michigan 7t4   u+ densiflorum  Brassicales #9        ~ca ALONG ROADSIDE.     91 1972-07-21 $[rS   !R2 kalkaska  (sz 1463955   #D UNITED STATES SCHR4D. R+9f,    ev5 Lepidium  Fy?H -85.0216 jane larue Y     9AUYk l3pidium densiflorum   N63! Excelsior Twp.
{"catalogNumber": "1463955", "order": "Brassicales", "family": "", "scientificName": "Lepidium densiflorum", "scientificNameAuthorship": "Schrad.", "genus": "Lepidium", "subgenus": "", "specificEpithet": "densiflorum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Jane LaRue", "recordNumber": "91", "verbatimEventDate": "1972-07-21", "habitat": "Along roadside.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Kalkaska", "municipality": "", "locality": "Excelsior Twp.", "decimalLatitude": "", "decimalLongitude": "-85.0216", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}