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": ""}
      Wu E1 united states  1878-07-21 A    S.N. (H&U  parthenium k!EiV     +V,B+ NANTUCKET w. a. kellermann S=-  MASSACHUSETTS 3    Nantucket b6?~    (l.) sch.bip. I_R5_V  tanacetum (=Y   -rFc TANACETUM PARTHENIUM 
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Tanacetum parthenium", "scientificNameAuthorship": "(L.) Sch.Bip.", "genus": "Tanacetum", "subgenus": "", "specificEpithet": "parthenium", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "W. A. Kellermann", "recordNumber": "s.n.", "verbatimEventDate": "1878-07-21", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Massachusetts", "county": "Nantucket", "municipality": "", "locality": "Nantucket", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}