when was the last time in 11/last year that patient 70516 was prescribed morphine sulfate.
select prescriptions.startdate from prescriptions where prescriptions.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 70516 ) and prescriptions.drug = 'morphine sulfate' and datetime(prescriptions.startdate,'start of year') = datetime(current_time,'start of year','-1 year') and strftime('%m',prescriptions.startdate) = '11' order by prescriptions.startdate desc limit 1