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": ""}
1860-05-20 s7u@|  CARD4MINE PRATENSIS j       CARDAMINE 70    m42.27K0872 ~_u[   s.n. w!    o~Y 8 pratensis brassicales I riQ  1462555 O6  united states <Z,4      u ud ann arbor  Oz/$x -83.726329  6 washtenaw   BRASSICACEAE V8   Ea MARY H. CLARK
{"catalogNumber": "1462555", "order": "Brassicales", "family": "Brassicaceae", "scientificName": "Cardamine pratensis", "scientificNameAuthorship": "", "genus": "Cardamine", "subgenus": "", "specificEpithet": "pratensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Mary H. Clark", "recordNumber": "s.n.", "verbatimEventDate": "1860-05-20", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Washtenaw", "municipality": "", "locality": "Ann Arbor", "decimalLatitude": "42.270872", "decimalLongitude": "-83.726329", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}