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": ""}
1539052 xUKz   49 R; 4   SMSFM Dry prairie    asterales GA +    ?vZ 1832-07-22  37 douglass houghton Liatris cylindracea b   zuIW michx.  crow wing probably / )gj     SCHOOLCRAFT EXPEDITION TO THE SOURCE OF THE MISSISSIPPI RIVER j-<Y   united states a ;     # Minnesota ASTERACEAE $   
{"catalogNumber": "1539052", "order": "Asterales", "family": "Asteraceae", "scientificName": "Liatris cylindracea", "scientificNameAuthorship": "Michx.", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Douglass Houghton", "recordNumber": "49", "verbatimEventDate": "1832-07-22", "habitat": "Dry prairie", "occurrenceRemarks": "Schoolcraft Expedition to the Source of the Mississippi River", "associatedTaxa": "", "country": "United States", "stateProvince": "Minnesota", "county": "Crow Wing probably", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}