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": ""}
       :_ MEGALOCARPA 7649 f     <_ uu a. gray  h9 E HUGH T. O'NEILL   . Poales    =<Dn 7 MILES ORTH OF MIAMI.  Q 1400629   Cyperaceae P|Se  FLORIDA  +a   sJT#C UNITED STATES   r^ rhynchospora   K;rD rhynchospora megalocarpa  Y 1933-03-03 
{"catalogNumber": "1400629", "order": "Poales", "family": "Cyperaceae", "scientificName": "Rhynchospora megalocarpa", "scientificNameAuthorship": "A. Gray", "genus": "Rhynchospora", "subgenus": "", "specificEpithet": "megalocarpa", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Hugh T. O'Neill", "recordNumber": "7649", "verbatimEventDate": "1933-03-03", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Florida", "county": "", "municipality": "", "locality": "7 miles north of Miami.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}