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": ""}
  SALICACEAE .  united states :?H   J.E. ECKENWALDER .(   malpighiales $    emmet ->nQf    nf[  45.55279  tremuloides .>)q    -84.78394 2pH2  1956-07-16 W,  CLONE 50, MALE, SAMYPLE TREE 5. 8xBX=       sp 1559883 MICHIGAN 1e^%=   Burton V. Barne s v y.C  
{"catalogNumber": "1559883", "order": "Malpighiales", "family": "Salicaceae", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "tremuloides", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "J.E. Eckenwalder", "recordedBy": "Burton V. Barnes", "recordNumber": "", "verbatimEventDate": "1956-07-16", "habitat": "", "occurrenceRemarks": "Clone 50, male, sample tree 5.", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Emmet", "municipality": "", "locality": "", "decimalLatitude": "45.55279", "decimalLongitude": "-84.78394", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}