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": ""}
     n4<U LACTUCA   qp` 1949-10-18  4t Shillong Peak  c  East Khasi Hills  Ex hastata  `x3 meghalaya  LACTUCA HASTATA op    9=! ` ASTERALES india n99  1829 W O:   g? WALL. EX DC.  w j thakur rup chand ASTERACEAE oJ|3    C FOREST 2440 t       f| 1538961
{"catalogNumber": "1538961", "order": "Asterales", "family": "Asteraceae", "scientificName": "Lactuca hastata", "scientificNameAuthorship": "Wall. ex DC.", "genus": "Lactuca", "subgenus": "", "specificEpithet": "hastata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Thakur Rup Chand", "recordNumber": "2440", "verbatimEventDate": "1949-10-18", "habitat": "Forest", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "Meghalaya", "county": "East Khasi Hills", "municipality": "", "locality": "Shillong Peak", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "1829", "maximumElevationInMeters": ""}