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": ""}
 `6 Asteraceae  l. T      / ast3rales    tpS [PLANTED?] perfoliatum ^T   1256481 @:?$O   C-yN SILPHIUM    0WASHTENAW z         >wpS UNITED STATES  MICHIGAN kL`   HKn silphium perfoliatum  ? nathan a. harvey
{"catalogNumber": "1256481", "order": "Asterales", "family": "Asteraceae", "scientificName": "Silphium perfoliatum", "scientificNameAuthorship": "L.", "genus": "Silphium", "subgenus": "", "specificEpithet": "perfoliatum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Nathan A. Harvey", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "[planted?]", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Washtenaw", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}