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": ""}
united states mE    m. p. widrlechner S 1l   s.n. o  h. c. schoepfle N<   $f#9. CONTACT UM HERBARIUM  iOwS erie    L$H?w Ohio    $ Rubus pubescens 1461850 Z,yr    A  rosales  1893-05-20 $+[    7yu rosaceae Raf. %Hh  RUBUS D7:     PUBESCENS +dQ   
{"catalogNumber": "1461850", "order": "Rosales", "family": "Rosaceae", "scientificName": "Rubus pubescens", "scientificNameAuthorship": "Raf.", "genus": "Rubus", "subgenus": "", "specificEpithet": "pubescens", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "M. P. Widrlechner", "recordedBy": "H. C. Schoepfle", "recordNumber": "s.n.", "verbatimEventDate": "1893-05-20", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Ohio", "county": "Erie", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}