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": ""}
  1972-05-18  vf&  brassicaceae .    !~ concatena7a   brassicales I;.t   john merkle 9e   72-8 u  Rare and widely scattered only in lower, wetter areas. @t+3   &k United States MICHIGAN C 9Gf         ASH,J SUGAR MAPLE, SILVER MAPLE WOODS ON CONOVER LOAM. 59~   ?& [ (michx.) o. schwarz  
{"catalogNumber": "", "order": "Brassicales", "family": "Brassicaceae", "scientificName": "", "scientificNameAuthorship": "(Michx.) O. Schwarz", "genus": "", "subgenus": "", "specificEpithet": "concatenata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John Merkle", "recordNumber": "72-8", "verbatimEventDate": "1972-05-18", "habitat": "Ash, sugar maple, silver maple woods on Conover loam.", "occurrenceRemarks": "Rare and widely scattered only in lower, wetter areas.", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}