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": ""}
   4w 1664   6KU5  (roxb.) judz.      m3-Y Labuhanbatu  1932-03-28 +OD   SCROTOCHLOA dP  SI BALIK KOEMASAR, VICINITY OF RANTAU PARAPAT, BILA T     Wl INDONESIA  Poales = Iw     urceolata  rahmat si toroes u;  Sumatra  /q_       Poaceae Z    ?FFw 1710621 scrotochloa urceolata @- 
{"catalogNumber": "1710621", "order": "Poales", "family": "Poaceae", "scientificName": "Scrotochloa urceolata", "scientificNameAuthorship": "(Roxb.) Judz.", "genus": "Scrotochloa", "subgenus": "", "specificEpithet": "urceolata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Rahmat Si Toroes", "recordNumber": "1664", "verbatimEventDate": "1932-03-28", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Indonesia", "stateProvince": "Sumatra", "county": "Labuhanbatu", "municipality": "", "locality": "Si Balik Koemasar, vicinity of Rantau Parapat, Bila", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}