what dose of cyclosporine (neoral) modified was last prescribed to patient 16271 since 80 months ago?
select prescriptions.dose_val_rx from prescriptions where prescriptions.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 16271 ) and prescriptions.drug = 'cyclosporine (neoral) modified' and datetime(prescriptions.startdate) >= datetime(current_time,'-80 month') order by prescriptions.startdate desc limit 1