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": ""}
1237909 M1Ra   Mexico  D  Michoacan gGrVm  QUERCUS v4 r    1940-08-12 u    > CASTANEA    6$6 NÃ©E    Fagaceae    QUERCUS CASTANEA Q~    William . Leavenwortnh ^Do=       xf^u CONTACT UM HERBARIUM   * FAGALES 
{"catalogNumber": "1237909", "order": "Fagales", "family": "Fagaceae", "scientificName": "Quercus castanea", "scientificNameAuthorship": "N\u00c3\u00a9e", "genus": "Quercus", "subgenus": "", "specificEpithet": "castanea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "William C. Leavenworth", "recordNumber": "", "verbatimEventDate": "1940-08-12", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Michoacan", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}