when was patient 73423 prescribed the drug docusate sodium and hydrocortisone na succ. at the same time for the last time since 162 months ago?
select t1.startdate from ( select admissions.subject_id, prescriptions.startdate from prescriptions join admissions on prescriptions.hadm_id = admissions.hadm_id where prescriptions.drug = 'docusate sodium' and admissions.subject_id = 73423 and datetime(prescriptions.startdate) >= datetime(current_time,'-162 month') ) as t1 join ( select admissions.subject_id, prescriptions.startdate from prescriptions join admissions on prescriptions.hadm_id = admissions.hadm_id where prescriptions.drug = 'hydrocortisone na succ.' and admissions.subject_id = 73423 and datetime(prescriptions.startdate) >= datetime(current_time,'-162 month') ) as t2 on t1.subject_id = t2.subject_id where datetime(t1.startdate) = datetime(t2.startdate) order by t1.startdate desc limit 1