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": ""}
   NAMUR 1 6         1642866  g   v2 Namur  L. i   De perennis  @ Eileen W. Erlanson   [V  garden weed  euphorbiaceae =9   ) ROCHEFORT   j?nH MERCURIALIS PERENNIS  malpighiales nU    *2 1925-10-8   !% ; S.N.
{"catalogNumber": "1642866", "order": "Malpighiales", "family": "Euphorbiaceae", "scientificName": "Mercurialis perennis", "scientificNameAuthorship": "L.", "genus": "", "subgenus": "", "specificEpithet": "perennis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Eileen W. Erlanson", "recordNumber": "s.n.", "verbatimEventDate": "1925-10-18", "habitat": "Garden weed", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Namur", "county": "Namur", "municipality": "", "locality": "Rochefort", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}