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": ""}
KSM50463 M@7   b 1463020    +5 Polygonaceae  2D kdent  LOWELL. >- 5    unted states |    m=& emma j. cole (L.) Delarbre  NFDS   p[R Caryophyllales  <6 MICHIGAN     ?D PERSICARIA persicaria amphibia L   IJ0 -85.3419N61  W+ m7 1893-09-03  U ~9 42.933643  ~4R s.n.  AMPHIBIA [+/  
{"catalogNumber": "1463020", "order": "Caryophyllales", "family": "Polygonaceae", "scientificName": "Persicaria amphibia", "scientificNameAuthorship": "(L.) Delarbre", "genus": "Persicaria", "subgenus": "", "specificEpithet": "amphibia", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Emma J. Cole", "recordNumber": "s.n.", "verbatimEventDate": "1893-09-03", "habitat": "", "occurrenceRemarks": "KSM50463", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Kent", "municipality": "", "locality": "Lowell.", "decimalLatitude": "42.933643", "decimalLongitude": "-85.341961", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}