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": ""}
  JOHN H. EHLERS W7v)    ^ (nutt.) spreng.     $ cirsium   h?dD Colorado  gxM Contact UM Herbarium    +e ASTERALES Asteraceae   =b  CIRSUM UNDULATUM  3vO   7673 9      aE united states  S F(U UNDULATUM  1442330 C   
{"catalogNumber": "1442330", "order": "Asterales", "family": "Asteraceae", "scientificName": "Cirsium undulatum", "scientificNameAuthorship": "(Nutt.) Spreng.", "genus": "Cirsium", "subgenus": "", "specificEpithet": "undulatum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "7673", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Colorado", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}