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": ""}
   l/t 2644   Kx Lamiales     _ab RIO POMBA     Sib F minas gerais   (cham.) bureau WgO     8. 1950-08-28       1541672     Tabebuia obtusifolia !@ 1  No data provided on label of catalog no: 1541672 $PL  
{"catalogNumber": "1541672", "order": "Lamiales", "family": "", "scientificName": "Tabebuia obtusifolia", "scientificNameAuthorship": "(Cham.) Bureau", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "2644", "verbatimEventDate": "1950-08-28", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Minas Gerais", "county": "Rio Pomba", "municipality": "", "locality": "No data provided on label of catalog no: 1541672", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}