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": ""}
  B ` 1334286   ~4 8540A     Populus R    YMalpighiales 9       2 CLONES, DIFFERENT THAN 8540B. QK  ; eL MICHIGAN    grandidentata z     l Michx.   OE warren h. wagner, jr.  AB  UNITED STATES
{"catalogNumber": "1334286", "order": "Malpighiales", "family": "", "scientificName": "", "scientificNameAuthorship": "Michx.", "genus": "Populus", "subgenus": "", "specificEpithet": "grandidentata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Warren H. Wagner, Jr.", "recordNumber": "8540a", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "2 clones, different than 8540b.", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}