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": ""}
 z Missouri  7_= Willd.   contact um herbarium SYX =   WT= Rosaceae UNITED STATES ZW`  rubus h u]i    A Rubus flagellaris   iW~ 1461470 rosales <     pgf m. p. widrlechner  [ flagellaris 7359 $-t    7z) ST. CHARLES    Rev. John Davis .c<    1917-0M5-25 E G 
{"catalogNumber": "1461470", "order": "Rosales", "family": "Rosaceae", "scientificName": "Rubus flagellaris", "scientificNameAuthorship": "Willd.", "genus": "Rubus", "subgenus": "", "specificEpithet": "flagellaris", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "M. P. Widrlechner", "recordedBy": "Rev. John Davis", "recordNumber": "7359", "verbatimEventDate": "1917-05-25", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Missouri", "county": "St. Charles", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}