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": ""}
  18, 45.90823  1357800 P;/a  PUMILA +DX    747 K2H   yVU7 Sturgeon River Station (Minneapolis, St. Paul andSault Ste. Marie Railway): 1 mile northeast of bridge on highway U.S. 2 over the Sturgeon River. Edward G. Voss <pyT  betula pumila var. glandulifera FJl<     ,ca% BETUL2AACEAE  *;AN var.  7 Regel  eX I# MICHIGAN   +s1.C fagales  < -86.70245  BETULA g?l7R  delta   kQ  UNITED STATES H    R  1951-09-15  u-L glandulifera harley h. bartlett & charles d.richards >B+N 
{"catalogNumber": "1357800", "order": "Fagales", "family": "Betulaceae", "scientificName": "Betula pumila var. glandulifera", "scientificNameAuthorship": "Regel", "genus": "Betula", "subgenus": "", "specificEpithet": "pumila", "verbatimTaxonRank": "var.", "infraspecificEpithet": "glandulifera", "identifiedBy": "Edward G. Voss", "recordedBy": "Harley H. Bartlett & Charles D. Richards", "recordNumber": "747", "verbatimEventDate": "1951-09-15", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Delta", "municipality": "", "locality": "Sturgeon River Station (Minneapolis, St. Paul and Sault Ste. Marie Railway): 1 mile northeast of bridge on highway U.S. 2 over the Sturgeon River.", "decimalLatitude": "45.90823", "decimalLongitude": "-86.70245", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}