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": ""}
   t,rf3 Jammu and Kashmir       1933-08-11 UX?0b  WALTER N.KOELZ B  (l.) c.a. mey.  u6  Lactuca tatarica A      w: U 6402     2Z<+t HEMIS, LADAKH  TATARICA 2d?    asterac?eae ljK aP  1538933 WM 
{"catalogNumber": "1538933", "order": "", "family": "Asteraceae", "scientificName": "Lactuca tatarica", "scientificNameAuthorship": "(L.) C.A. Mey.", "genus": "", "subgenus": "", "specificEpithet": "tatarica", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "6402", "verbatimEventDate": "1933-08-11", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Jammu and Kashmir", "county": "", "municipality": "", "locality": "Hemis, Ladakh", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}