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": ""}
   C Saxifragales 1887-10-29 Pz Vq     ` crassula  Australia U         2 1664969  sieberiana  tQ:   MELBOURME -0         3Y rJ Victoria (SCHULT.) RUCE    
{"catalogNumber": "1664969", "order": "Saxifragales", "family": "", "scientificName": "", "scientificNameAuthorship": "(Schult.) Druce", "genus": "Crassula", "subgenus": "", "specificEpithet": "sieberiana", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1887-10-29", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Australia", "stateProvince": "Victoria", "county": "Melbourne", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}