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": ""}
250 %RKY    (l.) kulju & welzen  /_$    1976-04-21 WtNx|    703 $   >d  in bombax ceiba-trewia nudiflora riverine forest  b+q D. Nicolson  /J O 1645847 no data Jf   J%8c Mallotus  ok EUPHORBIACEAE    WxTx REBECCA G. TROTH  nepal 2v z_    b  S 27â°33'n--84â°28'e   northeast section f the park, south of rapti river, chitwan district, narayani zone ca. 83 km 10â° south of west from kathmandu x0+ia  
{"catalogNumber": "1645847", "order": "", "family": "Euphorbiaceae", "scientificName": "", "scientificNameAuthorship": "(L.) Kulju & Welzen", "genus": "Mallotus", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "D. Nicolson", "recordedBy": "Rebecca G. Troth", "recordNumber": "703", "verbatimEventDate": "1976-04-21", "habitat": "In Bombax ceiba-Trewia nudiflora riverine forest", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Nepal", "stateProvince": "no data", "county": "", "municipality": "", "locality": "Northeast section of the Park, south of Rapti River, Chitwan District, Narayani Zone ca. 83 km 10\u00c2\u00b0 south of west from Kathmandu", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "27\u00c2\u00b033'N--84\u00c2\u00b028'E", "minimumElevationInMeters": "250", "maximumElevationInMeters": ""}