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": ""}
on the Muskegon Riv. bottoms along Otto Rd. on west side of river west of Leota. ~M#        $g- malpighiales     G United States  J.E. ECKENWALDER jw     Populus balsamifera t2]w#  MICHIGAN MVg       | occasional & scattered    
{"catalogNumber": "", "order": "Malpighiales", "family": "", "scientificName": "Populus balsamifera", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "J.E. Eckenwalder", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "Occasional & scattered", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "on the Muskegon Riv. bottoms along Otto Rd. on west side of river west of Leota.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}