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": ""}
 PIPER ADUNCUM GrR4y           smal|l slender tree 4gf:     1m Oaxaca Conrao V. Morton -M,     mE 2520   P mexico    ADUNCUM = y+P   HWZH@ 1933-04-01  +.c piperaceae
{"catalogNumber": "", "order": "", "family": "Piperaceae", "scientificName": "Piper aduncum", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "aduncum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Conrad V. Morton", "recordNumber": "2520", "verbatimEventDate": "1933-04-01", "habitat": "", "occurrenceRemarks": "small slender tree", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Oaxaca", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}