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": ""}
MICHIGAN ME!f+   1n/ N raf.   r w+ 1931-08-24 47.90806 $ Y   N~OG ROSALES CARL O. GRASSL j   pubescens <;   KEWEENAW _p    fU RUBUS 926 I=#z  United States eCM         j , Rubus pubescens   syBH mark p. widrlechner  -? 1470794  Rosaceae  B   #pZ -88.86556
{"catalogNumber": "1470794", "order": "Rosales", "family": "Rosaceae", "scientificName": "Rubus pubescens", "scientificNameAuthorship": "Raf.", "genus": "Rubus", "subgenus": "", "specificEpithet": "pubescens", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Mark P. Widrlechner", "recordedBy": "Carl O. Grassl", "recordNumber": "926", "verbatimEventDate": "1931-08-24", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Keweenaw", "municipality": "", "locality": "", "decimalLatitude": "47.90806", "decimalLongitude": "-88.86556", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}