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": ""}
   i 12864  MEXICO  *   <w SOLNALES  pg 7 CONTACT UM HERBARIUM  =+ ipomoea leptotoma  Oe*  U.T. WATERFALL   convolvulaceae %4    . z`f L3PTOTOMA  2C  Sonora    7 cX torr. gordon d. mcpherson %8     5dlt 1299403   Pu>1 1956-08-19 IPOMOEA [ss    
{"catalogNumber": "1299403", "order": "Solanales", "family": "Convolvulaceae", "scientificName": "Ipomoea leptotoma", "scientificNameAuthorship": "Torr.", "genus": "Ipomoea", "subgenus": "", "specificEpithet": "leptotoma", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Gordon D. McPherson", "recordedBy": "U.T. Waterfall", "recordNumber": "12864", "verbatimEventDate": "1956-08-19", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Sonora", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}