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 S  rubus pubescens CMg$b   )  1915-05-15       -83.698626 %8e   3e2 pubescens            MARK P. WIDRLECHNER Q4;]    washtenaw O   xPFSB speechler's woods, an n arbor.
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Rubus pubescens", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "pubescens", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Mark P. Widrlechner", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1915-05-15", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Washtenaw", "municipality": "", "locality": "Speechler's Woods, Ann Arbor.", "decimalLatitude": "", "decimalLongitude": "-83.698626", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}