user: Question: What is the highest Red List for the Muridae family and species Authority of Microtus pinetorum (Le Conte, 1830)?
Columns: ['Name', 'Species Authority', 'Order', 'Family', 'Red List']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['American Beaver', 'Castor canadensis Kuhl, 1820', 'ia Rodent', 'Castoridae', 7.0]
SQL:

assistant: SELECT MAX("Red List") FROM "Table" WHERE "Family" = 'Muridae' AND "Species Authority" = 'Microtus pinetorum (Le Conte, 1830)';