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": ""}
   -B DRY HILLS IRAN ZU=      fabales ;4xK(    3 l. ASTRAGALUS B;     18600 .q    fabaceae u<El   192-05-21 UfEY3    VgB%6 no data  = Astragalus     PXR2 1503098 
{"catalogNumber": "1503098", "order": "Fabales", "family": "Fabaceae", "scientificName": "Astragalus", "scientificNameAuthorship": "L.", "genus": "Astragalus", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "18600", "verbatimEventDate": "1942-05-21", "habitat": "Dry hills", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Iran", "stateProvince": "", "county": "no data", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}