what was the drug that until 11/2104 patient 88573 had been prescribed two times?
select t1.drug from ( select prescriptions.drug, count( prescriptions.startdate ) as c1 from prescriptions where prescriptions.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 88573 ) and strftime('%y-%m',prescriptions.startdate) <= '2104-11' group by prescriptions.drug ) as t1 where t1.c1 = 2