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": ""}
 duHg 42.78752      ]l] 1910-08 S.N. 3 >w  MICHIGAN Ez    1221972 ]Z    w) MICHX. saicaceae #m4,K    6 HOLLAND ETC.  =]3( POPLUS TREMULOIDES  tremuloides p     !/ Calvin H. Kauffman  |c$l Populus  -%: ottawa  X/IE -86.10893 "very common."  Y)~<   yMygN MALPIGHIAES u*nited states Y  
{"catalogNumber": "1221972", "order": "Malpighiales", "family": "Salicaceae", "scientificName": "Populus tremuloides", "scientificNameAuthorship": "Michx.", "genus": "Populus", "subgenus": "", "specificEpithet": "tremuloides", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Calvin H. Kauffman", "recordNumber": "s.n.", "verbatimEventDate": "1910-08", "habitat": "", "occurrenceRemarks": "\"very common.\"", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Ottawa", "municipality": "", "locality": "Holland etc.", "decimalLatitude": "42.78752", "decimalLongitude": "-86.10893", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}