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": ""}
 rcx  AITON Prunus 9  1468113 h6  Michigan +c   g NIGRA    0/_d UNITED STATES 45.47969 h4k|      ;A= cheboygan   h JOHN H. HLERS  0PfYV -84.6807 1752 / IqM     1921-08-08 .ND-   +0`C rosaceae  Xt Rosaes prunus nigra QI+   hardwoods.     aIv  BURT LAKE. COLONIAL POINT.
{"catalogNumber": "1468113", "order": "Rosales", "family": "Rosaceae", "scientificName": "Prunus nigra", "scientificNameAuthorship": "Aiton", "genus": "Prunus", "subgenus": "", "specificEpithet": "nigra", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "1752", "verbatimEventDate": "1921-08-08", "habitat": "Hardwoods.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Cheboygan", "municipality": "", "locality": "Burt Lake. Colonial Point.", "decimalLatitude": "45.47969", "decimalLongitude": "-84.6807", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}