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": ""}
   contact um herbarium 7           # H WATS schaffneri MFF6B    2 mexico  _ J.G. SCHAFFNER Reed C. Rollins 1f  Les querella schaffneri oll         h 1879   D1Z SAN LUIS POTOSI
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Lesquerella schaffneri", "scientificNameAuthorship": "Wats", "genus": "", "subgenus": "", "specificEpithet": "schaffneri", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Reed C. Rollins", "recordedBy": "J.G. Schaffner", "recordNumber": "", "verbatimEventDate": "1879", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "San Luis Potosi", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}