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": ""}
 u 2539   michigan C3!     < sparganium natans   NW/4 SE1/4 SEC 25 T43N-R9W CA. 3.5 MI. E OF NAUBINWAY #d   TYPHACEAE f&8S7     T$ov growing in swales between low cedar balsam ridges.  natans bHM   poales mt =  United States ]#q   9Hb l. DON HENSON  gF   ~ 9 mackinac sparganium 6@QV~   i1M  1988-07-03 1269`512 WF ne  
{"catalogNumber": "1269512", "order": "Poales", "family": "Typhaceae", "scientificName": "Sparganium natans", "scientificNameAuthorship": "L.", "genus": "Sparganium", "subgenus": "", "specificEpithet": "natans", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Don Henson", "recordNumber": "2539", "verbatimEventDate": "1988-07-03", "habitat": "Growing in swales between low cedar balsam ridges.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Mackinac", "municipality": "", "locality": "NW1/4 SE1/4 Sec 25 T43N-R9W ca. 3.5 mi. E of Naubinway", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}