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": ""}
   1406459 7  Bothriochloa saccharoides   ^    > CALIFORNIA  3406 e   uL san diego  1903-02-15 H)     Along edges of canons       J saccharoides  poaceae RPr    ! POALES   XX.nx san diego    r UNITED STATES
{"catalogNumber": "1406459", "order": "Poales", "family": "Poaceae", "scientificName": "Bothriochloa saccharoides", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "saccharoides", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "3406", "verbatimEventDate": "1903-02-15", "habitat": "Along edges of canons", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "California", "county": "San Diego", "municipality": "", "locality": "San Diego", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}