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": ""}
  michael j. oldham vy~   xEB1  hwy. 401 at iona road exit     nuttalliana U<:H_   e  1423128 POACEAE n9r    poales dE.KE           Kd ONTARIO  y; 1987-07-08  Y?o; elgin 7546 5L  (J.A. SCHULTES) A.S. HITCHC.  ! 
{"catalogNumber": "1423128", "order": "Poales", "family": "Poaceae", "scientificName": "", "scientificNameAuthorship": "(J.A. Schultes) A.S. Hitchc.", "genus": "", "subgenus": "", "specificEpithet": "nuttalliana", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Michael J. Oldham", "recordNumber": "7546", "verbatimEventDate": "1987-07-08", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Ontario", "county": "Elgin", "municipality": "", "locality": "Hwy. 401 at Iona Road exit", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}