List down the names of the establishments with the highest risk level and failed the inspection.
name of establishment refers to dba_name; the highest risk level refers to max(risk_level); failed the inspection refers to results = 'Fail'
SELECT DISTINCT T1.dba_name FROM establishment AS T1 INNER JOIN inspection AS T2 ON T1.license_no = T2.license_no WHERE T1.risk_level = 3 AND T2.results = 'Fail'