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": ""}
 6640 J    BS= cochinchinensis genti4nales ?   Forest 1m        * MAWPHLANG    DB% Melodinus      (lour.) merr.   n8 melodinus cNochinchinensis INDIA 35_<b  1829 b.:   ~L K thakur rup chand    y&W 1521363  j Apocynaceae Ea5t Khasi Hills 5    
{"catalogNumber": "1521363", "order": "Gentianales", "family": "Apocynaceae", "scientificName": "Melodinus cochinchinensis", "scientificNameAuthorship": "(Lour.) Merr.", "genus": "Melodinus", "subgenus": "", "specificEpithet": "cochinchinensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Thakur Rup Chand", "recordNumber": "6640", "verbatimEventDate": "", "habitat": "Forest", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "", "county": "East Khasi Hills", "municipality": "", "locality": "Mawphlang", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "1829", "maximumElevationInMeters": ""}