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": ""}
    exigua 6    y ? var.  &?UI] retusa     Q german exchamges of m.w. harrington  t]*>Y Euphorbiaceae Malpighiales )uMD           JEREZ DE LA FRONTERA %   bV Euphorbia exigua var. retusa  
{"catalogNumber": "", "order": "Malpighiales", "family": "Euphorbiaceae", "scientificName": "Euphorbia exigua var. retusa", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "exigua", "verbatimTaxonRank": "var.", "infraspecificEpithet": "retusa", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "German Exchanges of M.W. Harrington", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "Jerez de la Frontera", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}