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": ""}
  n<    ROSACEAE    EX MICHIGAN     /1x) 1973-05-07   735 dYZ    ROSCOMMON 9:BU  laevis 3t$GA   Vi AMELANCHIER LAEVIS  7rF W. ALAN WENTZ   SuF 1463699       
{"catalogNumber": "1463699", "order": "", "family": "Rosaceae", "scientificName": "Amelanchier laevis", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "laevis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "W. Alan Wentz", "recordNumber": "735", "verbatimEventDate": "1973-05-07", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Roscommon", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}