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": ""}
  < k POLYRHIZA  kvK Spirodela      NO DATA R   <g 1664639 ALSFELD, WEIHER BEI DER BADEANSTALT N kR    n t h. hupke   `0 alismatales   3# s. n.  ddM Germany    G 1971-06-02      xu]  Araceae  ^Y~L: spirodela polyrhiza   nz (L.) Schleid.
{"catalogNumber": "1664639", "order": "Alismatales", "family": "Araceae", "scientificName": "Spirodela polyrhiza", "scientificNameAuthorship": "(L.) Schleid.", "genus": "Spirodela", "subgenus": "", "specificEpithet": "polyrhiza", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "H. Hupke", "recordNumber": "s. n.", "verbatimEventDate": "1971-06-02", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Germany", "stateProvince": "no data", "county": "", "municipality": "", "locality": "Alsfeld, Weiher bei der Badeanstalt", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}