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": ""}
 WALTER N. KOELZ 1D<   1497600 J;l9w     meghalya r     b& 1829  z bersicaria nepalensis   pd polygonaceae  caryophyllales i  23238 .> [Y  laitlynkot [laitlyngkot] IsMQ   Hedge m%<  N3PALENSIS  1U   ~_W 1949-07-16   persicaria D   
{"catalogNumber": "1497600", "order": "Caryophyllales", "family": "Polygonaceae", "scientificName": "Persicaria nepalensis", "scientificNameAuthorship": "", "genus": "Persicaria", "subgenus": "", "specificEpithet": "nepalensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "23238", "verbatimEventDate": "1949-07-16", "habitat": "Hedge", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Meghalaya", "county": "", "municipality": "", "locality": "Laitlynkot [Laitlyngkot]", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "1829", "maximumElevationInMeters": ""}