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": ""}
     IGNEOUS CLIEFS, SHORT-TREE FORES7 s   km 660 along hwy Tehuantepec tCc      O HOWARD S. GENTRY  [ 1952-09-30  agave 5c Ro    914 #y   trel. iu l  Asparagaceae sRZ    1143606 @OCk  Mexico SX  2   ] 12247  `. UM ag.ave angustiarum  
{"catalogNumber": "1143606", "order": "", "family": "Asparagaceae", "scientificName": "Agave angustiarum", "scientificNameAuthorship": "Trel.", "genus": "Agave", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Howard S. Gentry", "recordNumber": "12247", "verbatimEventDate": "1952-09-30", "habitat": "Igneous cliffs, short-tree Forest", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "", "municipality": "", "locality": "km 660 along hwy Tehuantepec", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "914", "maximumElevationInMeters": ""}