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": ""}
croton %     =u3C -18.83027 ROGER BERNARD R        C MADAGASCAR      c=4i EUPHORBIACEAE        18Â°49'49"S 048Â°18'36"E      VDs7 nitidulus   Q Croton nitidulus
{"catalogNumber": "", "order": "", "family": "Euphorbiaceae", "scientificName": "Croton nitidulus", "scientificNameAuthorship": "", "genus": "Croton", "subgenus": "", "specificEpithet": "nitidulus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Roger Bernard", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Madagascar", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "-18.83027", "decimalLongitude": "", "verbatimCoordinates": "18\u00c2\u00b049'49\"S 048\u00c2\u00b018'36\"E", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}