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": ""}
   E 1951-0820   ,/ZY  42.52993  pendula -OZ       z FAGALES michigan w`m1     oakland     icd 1349553  $% -83.48219    united stae5 w^Z   BE7ULA :5=<   O S.N.  >|N [leaf removed for cl3aring d. demason] 
{"catalogNumber": "1349553", "order": "Fagales", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "Betula", "subgenus": "", "specificEpithet": "pendula", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "s.n.", "verbatimEventDate": "1951-08-20", "habitat": "", "occurrenceRemarks": "[Leaf removed for clearing D. DeMason]", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Oakland", "municipality": "", "locality": "", "decimalLatitude": "42.52993", "decimalLongitude": "-83.48219", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}