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": ""}
1949-11-01 .[    .<sC marsh   CARYOPHYLLALES t[0 /   Polygonum barbatum .c     POLYGONACEAE %YJM  1497654 u^^Q      1Aws india   KY*G roxb.  -6 polyqonum kamrup q [c  PALASBAR I **    Thakur Rup Chand qu_<  ASSAM -.@    Z~ 2452   _ barbatum
{"catalogNumber": "1497654", "order": "Caryophyllales", "family": "Polygonaceae", "scientificName": "Polygonum barbatum", "scientificNameAuthorship": "Roxb.", "genus": "Polygonum", "subgenus": "", "specificEpithet": "barbatum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Thakur Rup Chand", "recordNumber": "2452", "verbatimEventDate": "1949-11-01", "habitat": "Marsh", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "Assam", "county": "Kamrup", "municipality": "", "locality": "Palasbari", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}