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": ""}
  ` 1621  P ASTERACEAE  MICHIGAN DvNjp  UNITED SETATES [d     # Conyza      (L.) CRONQUIST R>    Ey> "OCCASIONAL"  .c Roadside     Ms:= 1973-08-11 1253266 < Y[(     44.594926 4* ^  to Lost Lake, recent logging road (pulp). 6Cm6    F -85.881327
{"catalogNumber": "1253266", "order": "", "family": "Asteraceae", "scientificName": "", "scientificNameAuthorship": "(L.) Cronquist", "genus": "Conyza", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "1621", "verbatimEventDate": "1973-08-11", "habitat": "Roadside", "occurrenceRemarks": "\"Occasional.\"", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "to Lost Lake, recent logging road (pulp).", "decimalLatitude": "44.594926", "decimalLongitude": "-85.881327", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}