instruction: what is the total amount of salsalate that has been prescribed to patient 69761 until 11/2105?
response: SELECT SUM(prescriptions.dose_val_rx) FROM prescriptions WHERE prescriptions.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 69761) AND prescriptions.drug = 'salsalate' AND STRFTIME('%y-%m', prescriptions.startdate) <= '2105-11'