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": ""}
in arboretum at ann arbor.  W0*     2 helianthus divaricatus   l:  MICHIGAN    r;EJd 1254026  JOHN H. EHLERS     WASHTENAW a    2kOW UNDER SHADE OF OAK-HICKORY STAND    j DIVARICATUS    f [ asterales  L. Jhd       0 Asteraceae
{"catalogNumber": "1254026", "order": "Asterales", "family": "Asteraceae", "scientificName": "Helianthus divaricatus", "scientificNameAuthorship": "L.", "genus": "", "subgenus": "", "specificEpithet": "divaricatus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "", "verbatimEventDate": "", "habitat": "Under shade of oak-hickory stand", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Washtenaw", "municipality": "", "locality": "in Arboretum at Ann Arbor.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}