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": ""}
     m7z^ OHIO    Caltha ) HK    7 Champaign  /_ L. swamQps & wet places eAa     H) john samples  Caltha palustris &J;j   8j*Bh 1498741   palustris F    N 1838-04-07   &rA upper cedars ranunculaceae @# 
{"catalogNumber": "1498741", "order": "", "family": "Ranunculaceae", "scientificName": "Caltha palustris", "scientificNameAuthorship": "L.", "genus": "Caltha", "subgenus": "", "specificEpithet": "palustris", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John Samples", "recordNumber": "", "verbatimEventDate": "1838-04-07", "habitat": "Swamps & wet places", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Ohio", "county": "Champaign", "municipality": "", "locality": "Upper Cedars", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}