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": ""}
  7 K+ 1559654  @ mich. salicaceae fT       Rensselaer   aTj  New York crL^x      S.N. Tpc%b   ?. Malpighiales     POPUfLUS P       1830-04 RX?   %9X the ink label is in the hand of bela hubbar, houghton's assistant. hubbard did not become houghton's assistant until 1837, so this label was written well after the collection was made.  PPULUS GRANDIDENTATA 3Q 
{"catalogNumber": "1559654", "order": "Malpighiales", "family": "Salicaceae", "scientificName": "Populus grandidentata", "scientificNameAuthorship": "Michx.", "genus": "Populus", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "s.n.", "verbatimEventDate": "1830-04", "habitat": "", "occurrenceRemarks": "The ink label is in the hand of Bela Hubbard, Houghton's assistant. Hubbard did not become Houghton's assistant until 1837, so this label was written well after the collection was made.", "associatedTaxa": "", "country": "", "stateProvince": "New York", "county": "Rensselaer", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}