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": ""}
  @ HARLEY H. BARTLETT  ^ZD UNITED STATES  Maryland V44     poales *op     Km, 2812   #+6 scirpus polyphyllus  Scirpus q    ~ K6 1911-09-04    N7c cyperaceae   SANDY OVERFLOW OF SPRING IN WOODS &J;   Ot POLYPHYLLUS   r<FQ  Prince George's
{"catalogNumber": "", "order": "Poales", "family": "Cyperaceae", "scientificName": "Scirpus polyphyllus", "scientificNameAuthorship": "", "genus": "Scirpus", "subgenus": "", "specificEpithet": "polyphyllus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Harley H. Bartlett", "recordNumber": "2812", "verbatimEventDate": "1911-09-04", "habitat": "Sandy overflow of spring in woods", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Maryland", "county": "Prince George's", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}