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": ""}
  ah IPOMOEA  pD8! ipomoea madrensis  7 MADRENSIS     convolvulaceae   lD~        F2  1157   Mexico s 1Aa    |a 1954-08-10    [2eX S.Watson  @:- GORDON D. MCPHERSON     CU CHIHUAHUA
{"catalogNumber": "", "order": "", "family": "Convolvulaceae", "scientificName": "Ipomoea madrensis", "scientificNameAuthorship": "S.Watson", "genus": "Ipomoea", "subgenus": "", "specificEpithet": "madrensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Gordon D. McPherson", "recordedBy": "", "recordNumber": "1157", "verbatimEventDate": "1954-08-10", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Chihuahua", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}