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": ""}
1954-04-15 m~.B   1676 uU?Zp   &+X 1486890  Imperata cylindrica rE^U     7551             SHILLONG 8Dm  india  !      old field $|> )  
{"catalogNumber": "1486890", "order": "", "family": "", "scientificName": "Imperata cylindrica", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "7551", "verbatimEventDate": "1954-04-15", "habitat": "Old field", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "", "county": "", "municipality": "", "locality": "Shillong", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "1676", "maximumElevationInMeters": ""}