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": ""}
 i=U 1933-07-18  royle ~,DG      Plantaginaceae z     B 1535698   Picrorhiza kurrooa  x  x     z 503   pukar, bhaga valley, lahul, kangra, punjab xeo.   lamiales ]    India `?rT   cH lahaul and spiti  L PICRORHIZA  
{"catalogNumber": "1535698", "order": "Lamiales", "family": "Plantaginaceae", "scientificName": "Picrorhiza kurrooa", "scientificNameAuthorship": "Royle", "genus": "Picrorhiza", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "503", "verbatimEventDate": "1933-07-18", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "", "county": "Lahaul and Spiti", "municipality": "", "locality": "Pukar, Bhaga Valley, Lahul, Kangra, Punjab", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}