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": ""}
 university of michigan botanical gardens, dixboro site, 4.5 mi. northeast of ann arbor. center of dry carex area. OD8  (l.) ã. lã¶ve Y!       U. POLYGONACEAE    g  fallopia convolvulus   Y/] United States  convolvulus kL    -83.662835 5tK    ]! CENTER OF DRY CAREX AAEA.  Lv  1476498  J anton a. reznicek 1959-07-12 K  Caryophyllales #x $:  445 q   JAMES E. PERLEY  $    
{"catalogNumber": "1476498", "order": "Caryophyllales", "family": "Polygonaceae", "scientificName": "Fallopia convolvulus", "scientificNameAuthorship": "(L.) \u00c3\u0081. L\u00c3\u00b6ve", "genus": "", "subgenus": "", "specificEpithet": "convolvulus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Anton A. Reznicek", "recordedBy": "James E. Perley", "recordNumber": "445", "verbatimEventDate": "1959-07-12", "habitat": "Center of dry Carex area.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "University of Michigan Botanical Gardens, Dixboro Site, 4.5 mi. northeast of Ann Arbor. Center of dry Carex area.", "decimalLatitude": "", "decimalLongitude": "-83.662835", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}