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": ""}
    =4 OPUNTIA  )3< Caryophyllales   1644123 0XA   =E]z cactaceae  cameron MWQ_H       E DAVID GRIFFITHS macrorhiza r   3Gbl 9050 OPUNTIA MTACRORHIA j     1908  ,^      4d brownville 
{"catalogNumber": "1644123", "order": "Caryophyllales", "family": "Cactaceae", "scientificName": "Opuntia macrorhiza", "scientificNameAuthorship": "", "genus": "Opuntia", "subgenus": "", "specificEpithet": "macrorhiza", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "David Griffiths", "recordNumber": "9050", "verbatimEventDate": "1908", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Cameron", "municipality": "", "locality": "Brownsville", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}