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": ""}
  ua1c  R. Dale Thomas   j Aong railroad tracks west of La. 173 and south of North Lakeshore Drive southeast of Blanchard; Sec 19 T18N, R4W   g MICHX.  o(t Euphorbiaceae CROTON pcg   <I`[ LOUISIANA       0eC Y 136875  B 1543490 1993-09-03 (Bz2    Kjtl MONANTHOGYNUS  CROTON MONANTHO6YNUS A8W   NN malpighiales united states &EbT     /M CADDO 
{"catalogNumber": "1543490", "order": "Malpighiales", "family": "Euphorbiaceae", "scientificName": "Croton monanthogynus", "scientificNameAuthorship": "Michx.", "genus": "Croton", "subgenus": "", "specificEpithet": "monanthogynus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "R. Dale Thomas", "recordNumber": "136875", "verbatimEventDate": "1993-09-03", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Louisiana", "county": "Caddo", "municipality": "", "locality": "Along railroad tracks west of La. 173 and south of North Lakeshore Drive southeast of Blanchard; Sec 19 T18N, R4W", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}