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": ""}
     =&U MONTERREY  1959-10-17 vP:7;     G I 1160064     B#=X limestone footh|lls; badly overbrowsed and over grazed foothill brush     Cro7on  3I:&   h#I  4346   roadside weeds m;9.    MEXICO EyL   
{"catalogNumber": "1160064", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "Croton", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "4346", "verbatimEventDate": "1959-10-17", "habitat": "limestone foothills; badly overbrowsed and over grazed foothill brush", "occurrenceRemarks": "roadside weeds", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "Monterrey", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}