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": ""}
  E6n~u Euphorbiaceae  y g  M.L. BLICXENSTAFF     ^,% common weed in wasteO spots   Bong Q   B  R] euphorbia heterophylla     jz2 heterophylla    cen. exp. st., swakoko  ,IK    liberia tkPN     HERB, 6-24 IN., FLOWER GREEN $6MqZ  
{"catalogNumber": "", "order": "", "family": "Euphorbiaceae", "scientificName": "Euphorbia heterophylla", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "heterophylla", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "M.L. Blickenstaff", "recordNumber": "", "verbatimEventDate": "", "habitat": "Common weed in waste spots", "occurrenceRemarks": "Herb, 6-24 in., flower green", "associatedTaxa": "", "country": "Liberia", "stateProvince": "Bong", "county": "", "municipality": "", "locality": "Cen. Exp. Sta., Swakoko", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}