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": ""}
1937-08-18 EfT2    lIt united states  + e.l. cheatum -83.37109 NI  Van Etton Lake, Sta. No. 3. xGj)   l  H L.  l 231   ^I iosco iris  8   ]*PsP iridaceae   Michigan D  SHORE, SAND. fp        S  Q  1340`124  J Ry versicolor   Asparagales ca   1 iris versicolor 44.504314 S 
{"catalogNumber": "1340124", "order": "Asparagales", "family": "Iridaceae", "scientificName": "Iris versicolor", "scientificNameAuthorship": "L.", "genus": "Iris", "subgenus": "", "specificEpithet": "versicolor", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "E.L. Cheatum", "recordNumber": "231", "verbatimEventDate": "1937-08-18", "habitat": "Shore, sand.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Iosco", "municipality": "", "locality": "Van Etton Lake, Sta. No. 3.", "decimalLatitude": "44.504314", "decimalLongitude": "-83.37109", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}