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": ""}
  w_@ PAAK MUK IP, YAM NA SHAN [IT NGA +SHAN] guangdong i[I,G    ~zk APELTA      (Lor.) M??ll.Arg. +   CHNA 6    5 Malpighiales  ? 1644870 M4LLOTUS APELTA UR7fL  W. T. TSANG vCHBm    21312 KV       
{"catalogNumber": "1644870", "order": "Malpighiales", "family": "", "scientificName": "Mallotus apelta", "scientificNameAuthorship": "(Lour.) M??ll.Arg.", "genus": "", "subgenus": "", "specificEpithet": "apelta", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "W. T. Tsang", "recordNumber": "21312", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "China", "stateProvince": "Guangdong", "county": "", "municipality": "", "locality": "Paak Muk Ip, Yam Na Shan [Yit Nga Shan]", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}