how much hydrocortisone (rectal) 2.5% cream is first prescribed to patient 90369 until 53 months ago?
select prescriptions.dose_val_rx from prescriptions where prescriptions.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 90369 ) and prescriptions.drug = 'hydrocortisone (rectal) 2.5% cream' and datetime(prescriptions.startdate) <= datetime(current_time,'-53 month') order by prescriptions.startdate asc limit 1