what is the minimum total cost of a hospital that includes a drug named d12.5w until 2104?
select min(t1.c1) from ( select sum(cost.cost) as c1 from cost where cost.hadm_id in ( select prescriptions.hadm_id from prescriptions where prescriptions.drug = 'd12.5w' ) and strftime('%y',cost.chargetime) <= '2104' group by cost.hadm_id ) as t1