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": ""}
  EDgku euphorbia densiflora  densiflora fcau   D 1157750       1928-02-28 zLXG4   1 mi S of Cortago 4q       _ Euphorbiaceae    1062 xOJo     P costa rica  7h 1402 Euphorbia a r 
{"catalogNumber": "1157750", "order": "", "family": "Euphorbiaceae", "scientificName": "Euphorbia densiflora", "scientificNameAuthorship": "", "genus": "Euphorbia", "subgenus": "", "specificEpithet": "densiflora", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "1062", "verbatimEventDate": "1928-02-28", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Costa Rica", "stateProvince": "", "county": "", "municipality": "", "locality": "1 mi S of Cortago", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "1402", "maximumElevationInMeters": ""}