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": ""}
 u8Z siderosa Heteropterys siderosa w 6      GUYANA <;   CUATREC. Z#    B 1993-05-22  c @ contact um herbariu   no data ;OIFj  Henkel, T. M. wA>  malpighiales  >hq    ta@ 1531844    e UPPER DEMERARA-BERBICE  2119 3U*    
{"catalogNumber": "1531844", "order": "Malpighiales", "family": "", "scientificName": "Heteropterys siderosa", "scientificNameAuthorship": "Cuatrec.", "genus": "", "subgenus": "", "specificEpithet": "siderosa", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Henkel, T. W.", "recordNumber": "2119", "verbatimEventDate": "1993-05-22", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Guyana", "stateProvince": "Upper Demerara-Berbice", "county": "no data", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}