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": ""}
  4c7| potamogetonaceae berchtoldii dyYb    1280220 )          %b 46.693192    `N? michigan     Potamogeton berchtoldii c>   [stiples not connate] [P. pusillus var. tenuissimus (RRH73)] u  HENRY T. DARLINGTON #n  1923-08 Cvg   
{"catalogNumber": "1280220", "order": "", "family": "Potamogetonaceae", "scientificName": "Potamogeton berchtoldii", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "berchtoldii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Henry T. Darlington", "recordNumber": "", "verbatimEventDate": "1923-08", "habitat": "", "occurrenceRemarks": "[stipules not connate] [P. pusillus var. tenuissimus (RRH73)]", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "46.693192", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}