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": ""}
NUTT. &M>45      J:H Malpighiales  [-w b "Small shrub about 2 meters tall; fruits brown.!"       7 salicaceae  Edward G. Voss 5E  Michigan A  exigua 5B%b   43.17558 W;D9f        R SALIX EXIGUA   
{"catalogNumber": "", "order": "Malpighiales", "family": "Salicaceae", "scientificName": "Salix exigua", "scientificNameAuthorship": "Nutt.", "genus": "", "subgenus": "", "specificEpithet": "exigua", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Edward G. Voss", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "\"Small shrub about 2 meters tall; fruits brown.\"", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "43.17558", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}