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": ""}
 ( r: SORSOGON   + 12.76844    1918-08 F_/R    POTHOIDIUM ro79N     _Opothoidium lobbianum     , SCHOTT ? J 14429 Philippines xK b  alisatales B  1664519 ,     vJ irosin (mr. bulusan)   
{"catalogNumber": "1664519", "order": "Alismatales", "family": "", "scientificName": "Pothoidium lobbianum", "scientificNameAuthorship": "Schott", "genus": "Pothoidium", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "14429", "verbatimEventDate": "1918-08", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Philippines", "stateProvince": "Sorsogon", "county": "", "municipality": "", "locality": "Irosin (Mr. Bulusan)", "decimalLatitude": "12.76844", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}