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": ""}
        1506473 Ml  JAMMU AND KASHMIR Cn     JNp] Jacq.     6mX WALTER N. KOELZ   1Ht rhamnus prostrata   M)X` ROSALES  #M   prostrata  TNO,U tetha, zaskar   [ %$ 5639   jDhz 1933-07-15 
{"catalogNumber": "1506473", "order": "Rosales", "family": "", "scientificName": "Rhamnus prostrata", "scientificNameAuthorship": "Jacq.", "genus": "", "subgenus": "", "specificEpithet": "prostrata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "5639", "verbatimEventDate": "1933-07-15", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Jammu and Kashmir", "county": "", "municipality": "", "locality": "Tetha, Zaskar", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}