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": ""}
     canada  8    rossicum UKC  1992-06-14 R         Ek Robertson Tract, Halton Reg. Forest, NE of jct. of 4th Lne & Conc. 10, Milton, Nassagaweya Twp, Grid-811193 (30 M/12)   #n(P 1544952  w. j. crins !D!7   ontario ;    Q?QTN 8756  VINCETOXICUM 4HAG  
{"catalogNumber": "1544952", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "Vincetoxicum", "subgenus": "", "specificEpithet": "rossicum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "W. J. Crins", "recordNumber": "8756", "verbatimEventDate": "1992-06-14", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "", "municipality": "", "locality": "Robertson Tract, Halton Reg. Forest, NE of jct. of 4th Line & Conc. 10, Milton, Nassagaweya Twp, Grid-811193 (30 M/12)", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}