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": ""}
 ekx  EHRH.  b dasycrpum   vermont Y  SAPINDALES W i  1506184 IUo     ZO,TZ acer dasycarpum  CHITTENDEN k vq    1878-04-19 J        FRED H. HORSFORD v   , ACER    U GRPM 43224  F-&j UNITED STATES   s.n. w0b8 
{"catalogNumber": "1506184", "order": "Sapindales", "family": "", "scientificName": "Acer dasycarpum", "scientificNameAuthorship": "Ehrh.", "genus": "Acer", "subgenus": "", "specificEpithet": "dasycarpum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Fred H. Horsford", "recordNumber": "s.n.", "verbatimEventDate": "1878-04-19", "habitat": "", "occurrenceRemarks": "GRPM 43224", "associatedTaxa": "", "country": "United States", "stateProvince": "Vermont", "county": "Chittenden", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}