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": ""}
  E SQUARROSUS  r#k2 Cyperus Cyperaceae [L^+  Texas 1   Dap N 838 l. M  terrel, blackstone ranch 13 miles south of sheffield. g2   v&7_ gyperus squarrosus      7 g. l. webster & k. i. miller   FM!>z UNITED STATES      3Zl 1949-07-08    !D  504   `h poales  1394450 :Xi>  
{"catalogNumber": "1394450", "order": "Poales", "family": "Cyperaceae", "scientificName": "Cyperus squarrosus", "scientificNameAuthorship": "L.", "genus": "Cyperus", "subgenus": "", "specificEpithet": "squarrosus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "G. L. Webster & K. I. Miller", "recordNumber": "504", "verbatimEventDate": "1949-07-08", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "", "municipality": "", "locality": "Terrel, Blackstone Ranch 13 miles south of Sheffield.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "838", "maximumElevationInMeters": ""}