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": ""}
  1520666 L&t   lamiaceae     ^7  LAMIALES    !R sandy riverbed bihar M^ZN   T ] walter n. koelz  d>O Vitex   CQ/? NO DATA  S<]#U garhwa road    India  GmK   [;) 1947-11-15  19587 X(  NEGUNDO +K[      ?6^# VITEX NEGUNDO
{"catalogNumber": "1520666", "order": "Lamiales", "family": "Lamiaceae", "scientificName": "Vitex negundo", "scientificNameAuthorship": "", "genus": "Vitex", "subgenus": "", "specificEpithet": "negundo", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "19587", "verbatimEventDate": "1947-11-15", "habitat": "Sandy riverbed", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "Bihar", "county": "no data", "municipality": "", "locality": "Garhwa Road", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}