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": ""}
 x Aesculus hippoastanum  r(a&6 BERKSHIRE   Williamstown l5$02     uwo Sapindaceae Massachusetts cFBe   l. z$  cultivated 7   favP UNITED STATES    zm_WU 1515296  W^ 1854   hippocastanum HE   42.6847 f$  s.n. D@  aesculus *     !l!5  GEORGE L. AMES sapindales 4 z1 
{"catalogNumber": "1515296", "order": "Sapindales", "family": "Sapindaceae", "scientificName": "Aesculus hippocastanum", "scientificNameAuthorship": "L.", "genus": "Aesculus", "subgenus": "", "specificEpithet": "hippocastanum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "George L. Ames", "recordNumber": "s.n.", "verbatimEventDate": "1854", "habitat": "", "occurrenceRemarks": "Cultivated", "associatedTaxa": "", "country": "United States", "stateProvince": "Massachusetts", "county": "Berkshire", "municipality": "", "locality": "Williamstown", "decimalLatitude": "42.6847", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}