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": ""}
1997-09-25 7F  3738 |#  united states SR^2,   SANDY FIELD J    ASTERACEAE bRt   (willd.) g. l. nesom &W3*  -83.77421 y6/cX    asterales cs   Michigan *Jp   PILOSUM tFt       D  41.85145   Uxr8$ Symphyotrichum pi|osum    HmpV robert w. smith   
{"catalogNumber": "", "order": "Asterales", "family": "Asteraceae", "scientificName": "Symphyotrichum pilosum", "scientificNameAuthorship": "(Willd.) G. L. Nesom", "genus": "", "subgenus": "", "specificEpithet": "pilosum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Robert W. Smith", "recordNumber": "3738", "verbatimEventDate": "1997-09-25", "habitat": "sandy field", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "41.85145", "decimalLongitude": "-83.77421", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}