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": ""}
 7u 6  Salvadoraceae udaipur Vx    v7 1937-04-22    walter n. koelz :  wall. @+       )G> Salvadora persica      Salvadora  RAJASTHAN E_ J     fz!vv India  [  11374   o3 udaipur, mewar state  
{"catalogNumber": "", "order": "", "family": "Salvadoraceae", "scientificName": "Salvadora persica", "scientificNameAuthorship": "Wall.", "genus": "Salvadora", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "11374", "verbatimEventDate": "1937-04-22", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "Rajasthan", "county": "Udaipur", "municipality": "", "locality": "Udaipur, Mewar State", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}