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": ""}
 c j44 1834-04  -F sassafras variifolium  j?;TH Lauraceae        Laurales MND6  ROBERT L. PETER h#   1500710 y         G+Z variifolium 38.03333 Md  -84.5 ?+MC     Sass4fras HP 
{"catalogNumber": "1500710", "order": "Laurales", "family": "Lauraceae", "scientificName": "Sassafras variifolium", "scientificNameAuthorship": "", "genus": "Sassafras", "subgenus": "", "specificEpithet": "variifolium", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Robert L. Peter", "recordNumber": "", "verbatimEventDate": "1834-04", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "38.03333", "decimalLongitude": "-84.5", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}