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": ""}
 M- 1949-07-07  7M 23069    (lN India  cA 610  1506023 W9   NONGPOH, KHASI HILLS .9f   >Tgt Walter N. Koelz MAYTENUS ko4    CELASTRALES cO#xH       Celatraceae X 7)4   =D W Maytenus  F Meghalaya   1W,ub RI-BHOI  DEEP FOREST $oa3; 
{"catalogNumber": "1506023", "order": "Celastrales", "family": "Celastraceae", "scientificName": "Maytenus", "scientificNameAuthorship": "", "genus": "Maytenus", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "23069", "verbatimEventDate": "1949-07-07", "habitat": "Deep forest", "occurrenceRemarks": "", "associatedTaxa": "", "country": "India", "stateProvince": "Meghalaya", "county": "Ri-Bhoi", "municipality": "", "locality": "Nongpoh, Khasi Hills", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "610", "maximumElevationInMeters": ""}