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": ""}
  thunb. Q6n   )@ sumatra  PURPURASCENS J7X!L  ASAHAN - /   1704790 Z,      Indonesia rgV  aer djoman, asahan (east of serbanan; n:orthwest corner of topographic sheet 19a; marsh land and swamp forest) ~          5i POACEAE   1935-08-05  _2[l 
{"catalogNumber": "1704790", "order": "", "family": "Poaceae", "scientificName": "", "scientificNameAuthorship": "Thunb.", "genus": "", "subgenus": "", "specificEpithet": "purpurascens", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1935-08-05", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Indonesia", "stateProvince": "Sumatra", "county": "Asahan", "municipality": "", "locality": "Aer Djoman, Asahan (east of Serbangan; northwest corner of topographic sheet 19A; marsh land and swamp forest)", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}