what was the name of the medicine that was prescribed to patient 65484 until 08/2103 for the last time?
select prescriptions.drug from prescriptions where prescriptions.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 65484 ) and strftime('%y-%m',prescriptions.startdate) <= '2103-08' order by prescriptions.startdate desc limit 1