tell me the total dose of furosemide prescribed to patient 40059 since 150 months ago?
select sum(prescriptions.dose_val_rx) from prescriptions where prescriptions.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 40059 ) and prescriptions.drug = 'furosemide' and datetime(prescriptions.startdate) >= datetime(current_time,'-150 month')