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": ""}
  4160 p    <$(b 1424603    CHESTER ROWELL sq/_       * 1955-06-20   SPOROBOLUS @)~pJ  (TORR.) TORR. S .]r    AN CONTACT UM HERBARIUM airoides T    texas  a SY   : Poales  
{"catalogNumber": "1424603", "order": "Poales", "family": "", "scientificName": "", "scientificNameAuthorship": "(Torr.) Torr.", "genus": "Sporobolus", "subgenus": "", "specificEpithet": "airoides", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Chester Rowell", "recordNumber": "4160", "verbatimEventDate": "1955-06-20", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Texas", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}