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": ""}
silphium terebinthinaceum c c.[  just N of Brampton, on W side of railroad (near center W1/2 sec. 21, T41N, R22W). hr*a     V6rZ edward g. voss      1982-08-23 dSFGv    )c Delta      Asterales silphium R!>Po   15524 Wp`8  UNITED STATES v    "Heads yelow; plants to 3 m tall." [on two sheets MICH]  L     
{"catalogNumber": "", "order": "Asterales", "family": "", "scientificName": "Silphium terebinthinaceum", "scientificNameAuthorship": "", "genus": "Silphium", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Edward G. Voss", "recordNumber": "15524", "verbatimEventDate": "1982-08-23", "habitat": "", "occurrenceRemarks": "\"Heads yellow; plants to 3 m tall.\" [on two sheets MICH]", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Delta", "municipality": "", "locality": "just N of Brampton, on W side of railroad (near center W1/2 sec. 21, T41N, R22W).", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}