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": ""}
  R2 ka walter n. koelz   7 Leea   L. _   (   W ri-bhoi   aU deep forest  V 1949-06-16   aequata /;S     74M 1506769  india %1F    J z Vitales   VITACEAE u=Kb     4 meghalaya  )~Lu Leea aequata 610 Tq._]  
{"catalogNumber": "1506769", "order": "Vitales", "family": "Vitaceae", "scientificName": "Leea aequata", "scientificNameAuthorship": "L.", "genus": "Leea", "subgenus": "", "specificEpithet": "aequata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "", "verbatimEventDate": "1949-06-16", "habitat": "Deep forest", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "Meghalaya", "county": "Ri-Bhoi", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "610", "maximumElevationInMeters": ""}