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": ""}
 15720 ~Tpc6    Contact UM Herbarium p4EV   nB ROGERS MCVAUGH   Myrcianthes lal    Qx Myrcianthes fragrans CARL A. PURPUS n$?4V         mexico   Veracruz i <Cs  1931 j)      vp5z fragrans  
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Myrcianthes fragrans", "scientificNameAuthorship": "", "genus": "Myrcianthes", "subgenus": "", "specificEpithet": "fragrans", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Rogers McVaugh", "recordedBy": "Carl A. Purpus", "recordNumber": "15720", "verbatimEventDate": "1931", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Veracruz", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}