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": ""}
       ^z 1973-06-23    l(v FLÃ¼GGÃ© EX WILLD.  canada GI   c+)#f salix  ontario <OUgz  A-LGOMA Jun&7   G:(I; david r. given  salix candida :tD|   QJ candida    2,1Y 1454505  GV*  malpighiales   ZM CONTACT UM HERBARIUM 
{"catalogNumber": "1454505", "order": "Malpighiales", "family": "", "scientificName": "Salix candida", "scientificNameAuthorship": "Fl\u00c3\u00bcgg\u00c3\u00a9 ex Willd.", "genus": "Salix", "subgenus": "", "specificEpithet": "candida", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "David R. Given", "recordNumber": "", "verbatimEventDate": "1973-06-23", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "Algoma", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}