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": ""}
    [msc sheet adds "still persisting (1913)"] k7uc,    qkM united states   spergularia m3dia r x#H   1910-07-28 GWY    1_((: PLENTIFUL IN G.T.R. FREIGHT YARDS ABOVE TUNNEL STATION, NEAR PORT HURON.    Z7 1472398  (L.) C. PRESL 2A    )FKV2 spergularia Charles K. Dodge      |)7^ 42.9596  Lh s.n.   
{"catalogNumber": "1472398", "order": "", "family": "", "scientificName": "Spergularia media", "scientificNameAuthorship": "(L.) C. Presl", "genus": "Spergularia", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles K. Dodge", "recordNumber": "s.n.", "verbatimEventDate": "1910-07-28", "habitat": "", "occurrenceRemarks": "[MSC sheet adds \"still persisting (1913)\"]", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "Plentiful in G.T.R. freight yards above Tunnel Station, near Port Huron.", "decimalLatitude": "42.9596", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}