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": ""}
   ~nB S (L.) DC.    &~,D 474 8ORDERS OF WOODS AND THICKETS     John Samsples Q`  1503410 tFXa       fabaceae 71p       Me canescens  VVM2B 1838-07-21   Fabales L R1pW   CHAMPAIGN D8(@ 
{"catalogNumber": "1503410", "order": "Fabales", "family": "Fabaceae", "scientificName": "", "scientificNameAuthorship": "(L.) DC.", "genus": "", "subgenus": "", "specificEpithet": "canescens", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John Samples", "recordNumber": "474", "verbatimEventDate": "1838-07-21", "habitat": "Borders of woods and thickets", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Champaign", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}