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": ""}
 ` 1521754        PH 507 7 IPOMOEA :u3    W convolvulaceae DENVER fq    Lv LEPTOPHYLL    Q Cherry Creek, Denver  C SEwV1 GRPM 45516 emma j. cole 6*ZA    +T COLORDO torxr. V&Y  BANK OF CREEK <>Iv    $ Ipomoea leptophylla 1895-07-13 wH  united states *#R   J2U Solanales
{"catalogNumber": "1521754", "order": "Solanales", "family": "Convolvulaceae", "scientificName": "Ipomoea leptophylla", "scientificNameAuthorship": "Torr.", "genus": "Ipomoea", "subgenus": "", "specificEpithet": "leptophylla", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Emma J. Cole", "recordNumber": "5077", "verbatimEventDate": "1895-07-13", "habitat": "Bank of creek", "occurrenceRemarks": "GRPM 45516", "associatedTaxa": "", "country": "United States", "stateProvince": "Colorado", "county": "Denver", "municipality": "", "locality": "Cherry Creek, Denver", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}