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. @T    LOs1< Chicago  M. MARTENS  pE-,    QAlX. grosseserratuks UNITED STATES 4   ;V.2r helianthus grosseserratus    Cook  xS   ^ 1538750   N asterales  XV illinois  helianthus +.    : D!f 1892-09-15  w.s. moffatt K# pw   GRPM 40408 ex+yC      [j ASTERACEAE
{"catalogNumber": "1538750", "order": "Asterales", "family": "Asteraceae", "scientificName": "Helianthus grosseserratus", "scientificNameAuthorship": "M. Martens", "genus": "Helianthus", "subgenus": "", "specificEpithet": "grosseserratus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "W.S. Moffatt", "recordNumber": "s.n.", "verbatimEventDate": "1892-09-15", "habitat": "", "occurrenceRemarks": "GRPM 40408", "associatedTaxa": "", "country": "United States", "stateProvince": "Illinois", "county": "Cook", "municipality": "", "locality": "Chicago", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}