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": ""}
 B7 POTAMOGETON  1281480     michigan ( rBZ  potamogetonaceae A  1940-08-03 4     w0 J. W. ROBBINS oakesianus 4Z@   0o;A< smith's bog    f,wa8 Po;tamogeton oakesianus   m_ 45.553753  ~7 Alismatales      ^; CHEBOYGAN  -8N C. Berg  -84.65432 3     q united states
{"catalogNumber": "1281480", "order": "Alismatales", "family": "Potamogetonaceae", "scientificName": "Potamogeton oakesianus", "scientificNameAuthorship": "J. W. Robbins", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "oakesianus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "C. Berg", "recordNumber": "", "verbatimEventDate": "1940-08-03", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Cheboygan", "municipality": "", "locality": "Smith's Bog", "decimalLatitude": "45.553753", "decimalLongitude": "-84.65432", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}