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": ""}
  <F muzd flat - seedling.  1318160 p  COLLECTED AT WARREN WOODS. h  S.N. &zyg   XE& carleton r. ball    united states <OU   Berrien |    o/9y? 1921-05-19  `(b Marshall  u 41.8345896 -86.6231632 c/U   Qc; SALICACEAE   G nigra  0G?o SALIX Cecil Billington /D   YD  michigan   Oe~ Malpighiales     Salix nigra
{"catalogNumber": "1318160", "order": "Malpighiales", "family": "Salicaceae", "scientificName": "Salix nigra", "scientificNameAuthorship": "Marshall", "genus": "Salix", "subgenus": "", "specificEpithet": "nigra", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Carleton R. Ball", "recordedBy": "Cecil Billington", "recordNumber": "s.n.", "verbatimEventDate": "1921-05-19", "habitat": "Mud flat - seedling.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Berrien", "municipality": "", "locality": "Collected at Warren Woods.", "decimalLatitude": "41.8345896", "decimalLongitude": "-86.6231632", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}