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": ""}
S.N. k!v  Brassicales Qxrv4    MICHIGAN awZ>   UNITED STATES 9 (  1917-07-03 ilqd     6c NATHAN A. HARVEY   hRM$ SCHRAD.   7[2)j -83.62063     Lepidium densiflorum densiflorum a-   6 O!  1463946 WASHTENAW I&T  BRASSICACEAE g     ` A YARD. 42.2449 Us hV    hEXE lepidium   W=O  vicinity of ypilanti   
{"catalogNumber": "1463946", "order": "Brassicales", "family": "Brassicaceae", "scientificName": "Lepidium densiflorum", "scientificNameAuthorship": "Schrad.", "genus": "Lepidium", "subgenus": "", "specificEpithet": "densiflorum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Nathan A. Harvey", "recordNumber": "s.n.", "verbatimEventDate": "1917-07-03", "habitat": "Yard.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Washtenaw", "municipality": "", "locality": "Vicinity of Ypsilanti", "decimalLatitude": "42.24459", "decimalLongitude": "-83.62063", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}