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": ""}
 Sq Jhimpir Lake,Kingha_r Lake (Kinghar Dand), Karachi District    8*Walter N. Koelz    Convolvulus microphyllus #   c F1k 1521620  ar3  MICROPHYLLUS convolvulus *+x!O   teDvk 1934-01-22      e.DK SIEBE EX SPRENG.    tDL, Sindh  PAKISTAN Ga   SOLANALES O  LY    
{"catalogNumber": "1521620", "order": "Solanales", "family": "", "scientificName": "Convolvulus microphyllus", "scientificNameAuthorship": "Sieber ex Spreng.", "genus": "Convolvulus", "subgenus": "", "specificEpithet": "microphyllus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "", "verbatimEventDate": "1934-01-22", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Pakistan", "stateProvince": "Sindh", "county": "", "municipality": "", "locality": "Jhimpir Lake, Kinghar Lake (Kinghar Dand), Karachi District", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}