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": ""}
    12 var. BRASSICALES @i+     TY arabis  3N_0 (graha) rydb brassicaceae 6     (h Arabis holboellii var. retrofracta CANADA R  <    3927 X    1973-05-12 rvRi  SIMCOE 9Q   holboellii .r  Ontario nOf<[  RETROFRACTA  #   F3B anton a. reznicek  Q$At 1305950 CONTACT UM HERBARIUM _@:  
{"catalogNumber": "1305950", "order": "Brassicales", "family": "Brassicaceae", "scientificName": "Arabis holboellii var. retrofracta", "scientificNameAuthorship": "(Graham) Rydb.", "genus": "Arabis", "subgenus": "", "specificEpithet": "holboellii", "verbatimTaxonRank": "var.", "infraspecificEpithet": "retrofracta", "identifiedBy": "", "recordedBy": "Anton A. Reznicek", "recordNumber": "3927", "verbatimEventDate": "1973-05-12", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "Simcoe", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}