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": ""}
  umbellatum DR     <m * RAHMAT SI BOEEA   o 8481  zr=a PIPERALES  d INDONESIA Asahan 8) bu     *e 1641908 NORTH SUMATRA %   L. ,     piperaceae =Q   Piper y$&U   1935-11-17 <%   
{"catalogNumber": "1641908", "order": "Piperales", "family": "Piperaceae", "scientificName": "", "scientificNameAuthorship": "L.", "genus": "Piper", "subgenus": "", "specificEpithet": "umbellatum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Rahmat Si Boeea", "recordNumber": "8481", "verbatimEventDate": "1935-11-17", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Indonesia", "stateProvince": "North Sumatra", "county": "Asahan", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}