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": ""}
1884-08-04  Gv    @ Bi  eupatorium perfoliatum  washtenaw ; AG*    PERFOLIATUM i f    ,== 1217418  `xD  MICHIGAN    low ground.  A[NN] A[RBOR], $    O 20    KS!!` "(white) 2â°-3â°" george b. sudworth _I[]  united states , S    EUPATORIUM      E -83.73083 
{"catalogNumber": "1217418", "order": "", "family": "", "scientificName": "Eupatorium perfoliatum", "scientificNameAuthorship": "", "genus": "Eupatorium", "subgenus": "", "specificEpithet": "perfoliatum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "George B. Sudworth", "recordNumber": "240", "verbatimEventDate": "1884-08-04", "habitat": "low ground.", "occurrenceRemarks": "\"(white) 2\u00c2\u00b0-3\u00c2\u00b0\"", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Washtenaw", "municipality": "", "locality": "A[nn] A[rbor],", "decimalLatitude": "", "decimalLongitude": "-83.73083", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}