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": ""}
    SILHIUM T]   INTEGRIFOLIUM  hXN    raVS L.M. UBACH  `D1 uniteo states ASTERALES ^   Asteraceae #iu      u michigan  Michx. z jRB     zi$ Silphium integrifolium  @ 125669     w2b  Van Buren [stem somewhat 4-angled] 52 U 
{"catalogNumber": "1256469", "order": "Asterales", "family": "Asteraceae", "scientificName": "Silphium integrifolium", "scientificNameAuthorship": "Michx.", "genus": "Silphium", "subgenus": "", "specificEpithet": "integrifolium", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "L.M. Umbach", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "[stem somewhat 4-angled]", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Van Buren", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}