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": ""}
   Salicaceae SAGINAW FORET, ANN ARBOR.  w    |>5c exigua   Edwin B. Mains ;Kuh   . 36V NUTT. Michigan hr<     R7 "plant 18" [anoWthNer sheet, same data but may 29, 1932] 19L32-05-18 LF        1316962 Z LV^    S.N. q  salix ?|l   42.276018 D^  salix exigua a<z>> 
{"catalogNumber": "1316962", "order": "", "family": "Salicaceae", "scientificName": "Salix exigua", "scientificNameAuthorship": "Nutt.", "genus": "Salix", "subgenus": "", "specificEpithet": "exigua", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Edwin B. Mains", "recordNumber": "s.n.", "verbatimEventDate": "1932-05-18", "habitat": "", "occurrenceRemarks": "\"Plant 18\" [another sheet, same data but May 29, 1932]", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "Saginaw Forest, Ann Arbor.", "decimalLatitude": "42.276018", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}