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": ""}
    &t y. 1543551  oSiN^ big bend national park, arid desert plains and hills, gravelly hills c. 1 mile e of mouth of terlingua creek, sparse scrub of larrea, fouquiera, & opuntia spp      !k   Texas     Croton Y,2:^   z g. l. webster & k. i. miller         BENJAMIN VAN EE Q` G(  var. s   P u6a Common in narrow draws
{"catalogNumber": "1543551", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "Croton", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "var.", "infraspecificEpithet": "", "identifiedBy": "Benjamin van Ee", "recordedBy": "G. L. Webster & K. I. Miller", "recordNumber": "", "verbatimEventDate": "", "habitat": "Common in narrow draws", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Texas", "county": "", "municipality": "", "locality": "Big Bend National Park, arid desert plains and hills, Gravelly hills c. 1 mile E of mouth of Terlingua Creek, sparse scrub of Larrea, Fouquiera, & Opuntia spp", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}