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": ""}
4164A b 75     Violaceae x=    MALPIGHIALES ft   c Thakur Rup Chand INDIA M+    -+kel 1507493  U KOHIMA   F--:j KOHIMA, NAGA HILLS   c Ag viola betonicifolia 8tp   sm. L      1951-01-20 d   K4[O VIOLA BKETONICIFOLIA  nagaland J 
{"catalogNumber": "1507493", "order": "Malpighiales", "family": "Violaceae", "scientificName": "Viola betonicifolia", "scientificNameAuthorship": "Sm.", "genus": "Viola", "subgenus": "", "specificEpithet": "betonicifolia", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Thakur Rup Chand", "recordNumber": "4164a", "verbatimEventDate": "1951-01-20", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "Nagaland", "county": "Kohima", "municipality": "", "locality": "Kohima, Naga Hills", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}