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": ""}
 1517872 t   DDa ALLEGAN  COMMELINALES 6I7  42.48218 Nl  2017-08-08 9$]l#     sYm: UNITED STATES   @ iX Pontederiaceae    -85.7961 q61   MICHIGAN 4<    DAZ anton . reznicek  AJ,6Y HETERANTHER DUBIA (JACQ.) MACMILL. d J    Heteranthera M#:g     m m  in shallow, ca. 7-12 inches of water 3adjacemt to the boat ramp. with stuckenia filiformis. in â± quiet, silty water.  nmX`N DUBIA RUSSELL G. SCHIPPER +r]sM 
{"catalogNumber": "1517872", "order": "Commelinales", "family": "Pontederiaceae", "scientificName": "Heteranthera dubia", "scientificNameAuthorship": "(Jacq.) MacMill.", "genus": "Heteranthera", "subgenus": "", "specificEpithet": "dubia", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Anton A. Reznicek", "recordedBy": "Russell G. Schipper", "recordNumber": "", "verbatimEventDate": "2017-08-08", "habitat": "In shallow, ca. 7-12 inches of water adjacent to the boat ramp. With Stuckenia filiformis. In \u00c2\u00b1 quiet, silty water.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Allegan", "municipality": "", "locality": "", "decimalLatitude": "42.48218", "decimalLongitude": "-85.7961", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}