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": ""}
    ( "assoc.: ac3r ruLbrum, larix laricina, onoclea sensibilis, carex stricta, symplocarpus foet."          UDc 42.29535   D steven p. grund    caroliniana vdm_         -85.30528 en 
{"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "caroliniana", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Steven P. Grund", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "\"Assoc.: Acer rubrum, Larix laricina, Onoclea sensibilis, Carex stricta, Symplocarpus foet.\"", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "42.29535", "decimalLongitude": "-85.30528", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}