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": ""}
   3k7 1970-09-23   500 a+HT     e*( 24734   2of C. DC. Brazil O    PIPERALES PMk>m  Morretes 2j  1641346 e  Piper caldense _L    PARANÃ¡ OntzX    Gr@i_ PIPERACEAE    p5 piper 
{"catalogNumber": "1641346", "order": "Piperales", "family": "Piperaceae", "scientificName": "Piper caldense", "scientificNameAuthorship": "C. DC.", "genus": "Piper", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "24734", "verbatimEventDate": "1970-09-23", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Brazil", "stateProvince": "Paran\u00c3\u00a1", "county": "Morretes", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "500", "maximumElevationInMeters": ""}