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": ""}
  1850 @   T <.( northeim  SgL5 Niedersachsen  malpighiales MO    1642834 .t  mercurialis D_)m   GERMANY m    j.QU MERCURIALIS ANNUA     S.N. @_|xt    & Z NOT EVIDENT   euphorbiaceae  3>7  moringen oEVl   
{"catalogNumber": "1642834", "order": "Malpighiales", "family": "Euphorbiaceae", "scientificName": "Mercurialis annua", "scientificNameAuthorship": "", "genus": "Mercurialis", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Not evident", "recordNumber": "s.n.", "verbatimEventDate": "1850", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Germany", "stateProvince": "Niedersachsen", "county": "Northeim", "municipality": "", "locality": "Moringen", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}