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": ""}
   :t, LIGUSTRUM   #lL6= walter n. koelz  1515945         YsQW Hmuntha, Lushai Hills  7le; INIA  rNjWA 152  FgQ5 serchhip    1951-04-05 4  mizoram T   OLEACEAE  Y l     3:( 27495   
{"catalogNumber": "1515945", "order": "", "family": "Oleaceae", "scientificName": "", "scientificNameAuthorship": "", "genus": "Ligustrum", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "27495", "verbatimEventDate": "1951-04-05", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "Mizoram", "county": "Serchhip", "municipality": "", "locality": "Hmuntha, Lushai Hills", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "1524", "maximumElevationInMeters": ""}