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": ""}
     2K7 Asterales Houghton J^   fvyG; 1972       7YV ? at public boat landing. Sturgeon Slough.  u, meadow       L Erigeron    yGT 1253795  4(AU 1949-06-16   charles d. richards $ 
{"catalogNumber": "1253795", "order": "Asterales", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "Erigeron", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles D. Richards", "recordNumber": "1972", "verbatimEventDate": "1949-06-16", "habitat": "Meadow", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Houghton", "municipality": "", "locality": "at public boat landing. Sturgeon Slough.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}