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": ""}
   2 *M united states  In lowland forest, 78r$r  1935-07-31 i  salicaceae n    v- Malpighiales   1C % |carl o. grassl   POPULUS BALSAMIFERA h    WQ @ 1221937  Delta sts;    NORTH OF SOUTH LAKE. SOUTH OF ESCANABA e4    0r: J.E. Eckenwalder Populus +X   [)S M BALSAMIFERA     - MICHIGAN   hr- 1571
{"catalogNumber": "1221937", "order": "Malpighiales", "family": "Salicaceae", "scientificName": "Populus balsamifera", "scientificNameAuthorship": "", "genus": "Populus", "subgenus": "", "specificEpithet": "balsamifera", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "J.E. Eckenwalder", "recordedBy": "Carl O. Grassl", "recordNumber": "1571", "verbatimEventDate": "1935-07-31", "habitat": "In lowland forest,", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Delta", "municipality": "", "locality": "north of South Lake. South of Escanaba", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}