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": ""}
Piber RIB    UAXACTUN  c^<    PIPERALES DN   F c Piperaceae     BrjIn 1931-03-19  >p , PIPER MARTENSIANUM    Guatemala J  12170 (f(  H. H. Bartlett ?    e & flores  ARTENS|ANUM *E] .      cn 1641296 
{"catalogNumber": "1641296", "order": "Piperales", "family": "Piperaceae", "scientificName": "Piper martensianum", "scientificNameAuthorship": "", "genus": "Piper", "subgenus": "", "specificEpithet": "martensianum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "H. H. Bartlett", "recordNumber": "12170", "verbatimEventDate": "1931-03-19", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Guatemala", "stateProvince": "", "county": "Flores", "municipality": "", "locality": "Uaxactun", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}