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": ""}
     s.n. nZ     h   MINNESOTA    !G GEORGE B. AITON UN8ITED STATES UP   a RANUNCULUS       >&9 CIRCINATUS  1891-07 kW  GRPM 50669 Rpes  1500001 ]g F   h ranunculus circinatus  RANUNCULACEAE H 
{"catalogNumber": "1500001", "order": "", "family": "Ranunculaceae", "scientificName": "Ranunculus circinatus", "scientificNameAuthorship": "", "genus": "Ranunculus", "subgenus": "", "specificEpithet": "circinatus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "George B. Aiton", "recordNumber": "s.n.", "verbatimEventDate": "1891-07", "habitat": "", "occurrenceRemarks": "GRPM 50669", "associatedTaxa": "", "country": "United States", "stateProvince": "Minnesota", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}