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": ""}
s. white            1939-07-05 [24     O~ 2 najas  &MQ hydrocharitaceae    a. novelo retana *of$    AH5Q guadalupensis -101.419 Cn  ! SF 1768 (spreng.) magnus  SS?    Najas guadalupensis var. guadalupensis 43^b-  
{"catalogNumber": "", "order": "", "family": "Hydrocharitaceae", "scientificName": "Najas guadalupensis var. guadalupensis", "scientificNameAuthorship": "(Spreng.) Magnus", "genus": "Najas", "subgenus": "", "specificEpithet": "guadalupensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "A. Novelo Retana", "recordedBy": "S. White", "recordNumber": "1768", "verbatimEventDate": "1939-07-05", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-101.419", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}