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. D&   u,0?* (MICHX.) BRITTON, STERNS & POGGENB.     ,~ 1897-09-27  Maryland ^    ?U ambiguus 1415634 %dfFo  gymnopogon ambiguus :Gx*   s>4j9 Contact UM Herbarium    3> ADRIAN J. PIETERS  H poaceae    pk6a poales  *1> united states    4H9P [mixed collection; requires second barcode]   Q GYMNOPOGON
{"catalogNumber": "1415634", "order": "Poales", "family": "Poaceae", "scientificName": "Gymnopogon ambiguus", "scientificNameAuthorship": "(Michx.) Britton, Sterns & Poggenb.", "genus": "Gymnopogon", "subgenus": "", "specificEpithet": "ambiguus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Adrian J. Pieters", "recordNumber": "s.n.", "verbatimEventDate": "1897-09-27", "habitat": "", "occurrenceRemarks": "[mixed collection; requires second barcode]", "associatedTaxa": "", "country": "United States", "stateProvince": "Maryland", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}