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": ""}
    (retz.) nees ex steud.  1:[    #tc eragrostis     aGjV) 21643    o UNIOLOIDES   e 1706916   xrtqV Poales Abundan7; sandy soil, swamp, rice (ten) race; hebr; fl. whitish bright 4O_O)   (p & Tsang W. T.    eO wa China  GUANGDONG  h  TUNG KOO SHAN, TAPU DISTRICT C    J  X eragrostis unioloides
{"catalogNumber": "1706916", "order": "Poales", "family": "", "scientificName": "Eragrostis unioloides", "scientificNameAuthorship": "(Retz.) Nees ex Steud.", "genus": "Eragrostis", "subgenus": "", "specificEpithet": "unioloides", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Tsang W. T.", "recordNumber": "21643", "verbatimEventDate": "", "habitat": "Abundant; sandy soil, swamp, rice (ten) race; hebr; fl. whitish bright", "occurrenceRemarks": "", "associatedTaxa": "", "country": "China", "stateProvince": "Guangdong", "county": "", "municipality": "", "locality": "Tung Koo Shan, Tapu District", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}