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": ""}
750 [+$r$   repanda - :H    Western c(6O       l. croizat  xPWt   k   1941-02-04      Qn  1666734   acalypha repanda Cvar. denudata 5U,blb       
{"catalogNumber": "1666734", "order": "", "family": "", "scientificName": "Acalypha repanda var. denudata", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "repanda", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "L. Croizat", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1941-02-04", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Western", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "750", "maximumElevationInMeters": ""}