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": ""}
  Iz muhlenbergia     1941-09-15 W7     z+ 114936    :[ CONTACT UM HERBARIUM     TAm 4 Poaceae  JosÃ© V3ra Santos X.QH   Muhlenbergia rigens zG@U   H;)Z  T.R. SODERTROM     
{"catalogNumber": "1124936", "order": "", "family": "Poaceae", "scientificName": "Muhlenbergia rigens", "scientificNameAuthorship": "", "genus": "Muhlenbergia", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "T.R. Soderstrom", "recordedBy": "Jos\u00c3\u00a9 Vera Santos", "recordNumber": "", "verbatimEventDate": "1941-09-15", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}