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": ""}
  dU pumila   ~4 r edward g. voss   44.22149  8      jO> glandulifera  I Fagales   + ^B va.  i2 Q REGEL  <H BETULACEAE   t5GU ROSCOMMON  michigan m s  Grounded bog; clumped shrub ca. 3 m. tall toward edge of bog, near B. papyrifera.  v   >% 4272   hA; 1957-06-27  A United States   +WgT Betul4 "Lvs glaucous beneath."  ety  
{"catalogNumber": "", "order": "Fagales", "family": "Betulaceae", "scientificName": "", "scientificNameAuthorship": "Regel", "genus": "Betula", "subgenus": "", "specificEpithet": "pumila", "verbatimTaxonRank": "var.", "infraspecificEpithet": "glandulifera", "identifiedBy": "", "recordedBy": "Edward G. Voss", "recordNumber": "4272", "verbatimEventDate": "1957-06-27", "habitat": "Grounded bog; clumped shrub ca. 3 m. tall toward edge of bog, near B. papyrifera.", "occurrenceRemarks": "\"Lvs glaucous beneath.\"", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Roscommon", "municipality": "", "locality": "", "decimalLatitude": "44.22149", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}