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": ""}
   xh oaxaca      1976-04-u15 4.@!    h m. sousa sã¡nchez & o. tã©llez valdã©s  7x 17.7283            -97.8557 W:P     <HYw Vachellia campechiana 
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Vachellia campechiana", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "M. Sousa S\u00c3\u00a1nchez & O. T\u00c3\u00a9llez Vald\u00c3\u00a9s", "recordNumber": "", "verbatimEventDate": "1976-04-15", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Oaxaca", "county": "", "municipality": "", "locality": "", "decimalLatitude": "17.7283", "decimalLongitude": "-97.8557", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}