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": ""}
   Ni b 1542986  WOODLAND & BUSHAND  7     _@4m P. Kuchar   1_x pax   1610 Ic>     /~D EUPHORBIACEAE CROTON POLYTRICHUS E a-     n  SHRUB 3 M  IxTj CROTON    W SINGIDA RURAL    4=:+  35.1527778
{"catalogNumber": "1542986", "order": "", "family": "Euphorbiaceae", "scientificName": "Croton polytrichus", "scientificNameAuthorship": "Pax", "genus": "Croton", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "P. Kuchar", "recordNumber": "", "verbatimEventDate": "", "habitat": "Woodland & bushland", "occurrenceRemarks": "Shrub 3 m", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Singida Rural", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "35.1527778", "verbatimCoordinates": "", "minimumElevationInMeters": "1610", "maximumElevationInMeters": ""}