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": ""}
1468443  ,   k  Prunus serotina     y1 L Prunus United States l  730 wK   XRC5 44.502967  1983-07-06 oIMM  Along Pine Rivr. D    Ggz e -83.756151  0Yo Rosaceae Iosco ZMx4   SEROTINA %+b]~  rosales 6>,q      l JOHN V. FREUDENSTEIN Edge of moist Quercus-Acer woods. U   . michigan  
{"catalogNumber": "1468443", "order": "Rosales", "family": "Rosaceae", "scientificName": "Prunus serotina", "scientificNameAuthorship": "", "genus": "Prunus", "subgenus": "", "specificEpithet": "serotina", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John V. Freudenstein", "recordNumber": "730", "verbatimEventDate": "1983-07-06", "habitat": "Edge of moist Quercus-Acer woods.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Iosco", "municipality": "", "locality": "Along Pine River.", "decimalLatitude": "44.502967", "decimalLongitude": "-83.756151", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}