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": ""}
-83.629645 V?oS4     asteraceae 5hn    , helianthus  1 nathan a. harvey    u ASTERALES    b:X giganteus    River road. [Vicinity of Ypsilanti] kJ   P) 5x 42.25589 1917-08-09 B  SUBSP. +E c     $2# GIGANTEUS   
{"catalogNumber": "", "order": "Asterales", "family": "Asteraceae", "scientificName": "", "scientificNameAuthorship": "", "genus": "Helianthus", "subgenus": "", "specificEpithet": "giganteus", "verbatimTaxonRank": "subsp.", "infraspecificEpithet": "giganteus", "identifiedBy": "", "recordedBy": "Nathan A. Harvey", "recordNumber": "", "verbatimEventDate": "1917-08-09", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "River road. [Vicinity of Ypsilanti]", "decimalLatitude": "42.25589", "decimalLongitude": "-83.629645", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}