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": ""}
  f guanajuato   y:PMv EUPHORBA SERRULA       B[= SERAULA   z` 8 -100.55262   +[f san nicolã¡s, carretera hacia iturbide     Q PLANTA HERBÃ¡CEA RASTRERA;o FLOR COLOR ROSA; FRUTO VERDE; ESCASA 1158494 C   mexico  E  9346  B7   =b=p victor w. steinmann euphorbia >]0     g 21.2658  
{"catalogNumber": "1158494", "order": "", "family": "", "scientificName": "Euphorbia serrula", "scientificNameAuthorship": "", "genus": "Euphorbia", "subgenus": "", "specificEpithet": "serrula", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Victor W. Steinmann", "recordedBy": "", "recordNumber": "9346", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "planta herb\u00c3\u00a1cea rastrera; flor color rosa; fruto verde; escasa", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Guanajuato", "county": "", "municipality": "", "locality": "San Nicol\u00c3\u00a1s, carretera hacia Iturbide", "decimalLatitude": "21.2658", "decimalLongitude": "-100.55262", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}