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": ""}
  12504 &f    vxF?1 MICHIGAN     f?bDk UNITED STATES   2018-10-12 d&  Open areas among newish shrub plantings in full sun; p1erhaps brought in tubers in soil of nursery stock o   1657132 ~B M      9g esculentus    ann arbor, s side; 3600 varsity drive, Kresearch museums building grounds, near front of building <Mc   adtzk washtenaw    C2 42.2359639 
{"catalogNumber": "1657132", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "esculentus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "12504", "verbatimEventDate": "2018-10-12", "habitat": "Open areas among newish shrub plantings in full sun; perhaps brought in tubers in soil of nursery stock", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Washtenaw", "municipality": "", "locality": "Ann Arbor, S side; 3600 Varsity Drive, Research Museums Building grounds, near front of building", "decimalLatitude": "42.2359639", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}