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": ""}
H. Eggert t`r8   1875-09-18 a +    Poaceae $T    7Mvr no data provided on label of catalog no:1418760     st. louis .3C9%   zE 1418760    _u dichotomiflorum PANICUM DICHOTOMIFLORUM *    9=Xo Missouri   - CJ7 Poales  B4 united states  i s.n.  MICHX. u,Yb    u  PANICUM
{"catalogNumber": "1418760", "order": "Poales", "family": "Poaceae", "scientificName": "Panicum dichotomiflorum", "scientificNameAuthorship": "Michx.", "genus": "Panicum", "subgenus": "", "specificEpithet": "dichotomiflorum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "H. Eggert", "recordNumber": "s.n.", "verbatimEventDate": "1875-09-18", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Missouri", "county": "St. Louis", "municipality": "", "locality": "no data provided on label of catalog no:1418760", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}