when did patient 3369 until 67 months ago last get a viral culture:r/o herpes simplex virus microbiology test?
select microbiologyevents.charttime from microbiologyevents where microbiologyevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 3369 ) and microbiologyevents.spec_type_desc = 'viral culture:r/o herpes simplex virus' and datetime(microbiologyevents.charttime) <= datetime(current_time,'-67 month') order by microbiologyevents.charttime desc limit 1