when was the last time patient 7698 was prescribed soln with albuterol 0.083% neb soln at the same time in a month before?
select t1.startdate from ( select admissions.subject_id, prescriptions.startdate from prescriptions join admissions on prescriptions.hadm_id = admissions.hadm_id where prescriptions.drug = 'soln' and admissions.subject_id = 7698 and datetime(prescriptions.startdate,'start of month') = datetime(current_time,'start of month','-1 month') ) as t1 join ( select admissions.subject_id, prescriptions.startdate from prescriptions join admissions on prescriptions.hadm_id = admissions.hadm_id where prescriptions.drug = 'albuterol 0.083% neb soln' and admissions.subject_id = 7698 and datetime(prescriptions.startdate,'start of month') = datetime(current_time,'start of month','-1 month') ) as t2 on t1.subject_id = t2.subject_id where datetime(t1.startdate) = datetime(t2.startdate) order by t1.startdate desc limit 1