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": ""}
    1493171 B~  Dendrobium 8   0bV 30857A EPIPHYTE ON FOREST TREE ^     ASPARAGALES d      V(( 1952A-07-28  Te chrysanthum  1219 arU   meghalaya $   Dendrobium chrysanthum v1  walter n. koelz  yn   - wall. ex lindl.  ~ east khasi hil|s 
{"catalogNumber": "1493171", "order": "Asparagales", "family": "", "scientificName": "Dendrobium chrysanthum", "scientificNameAuthorship": "Wall. ex Lindl.", "genus": "Dendrobium", "subgenus": "", "specificEpithet": "chrysanthum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "30857A", "verbatimEventDate": "1952-07-28", "habitat": "Epiphyte on forest tree", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Meghalaya", "county": "East Khasi Hills", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "1219", "maximumElevationInMeters": ""}