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": ""}
   x CROTON   rt e. martã­nez   1971-12-24 Pa  CROTON NIVEUS  Z     ARBUSTO DE 4 M, ABUNDANTE 6&0*       4 jacq.   O no data   Mexico Uje   = Euphorbiaceae  240 z/=  
{"catalogNumber": "", "order": "", "family": "Euphorbiaceae", "scientificName": "Croton niveus", "scientificNameAuthorship": "Jacq.", "genus": "Croton", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "E. Mart\u00c3\u00adnez", "recordedBy": "", "recordNumber": "240", "verbatimEventDate": "1971-12-24", "habitat": "", "occurrenceRemarks": "Arbusto de 4 m, abundante", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "no data", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}