provide the daily minimum amount of enfamiladdedrice po that patient 15794 has received since 06/20/2104.
select min(inputevents_cv.amount) from inputevents_cv where inputevents_cv.icustay_id in ( select icustays.icustay_id from icustays where icustays.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 15794 ) ) and inputevents_cv.itemid in ( select d_items.itemid from d_items where d_items.label = 'enfamiladdedrice po' and d_items.linksto = 'inputevents_cv' ) and strftime('%y-%m-%d',inputevents_cv.charttime) >= '2104-06-20' group by strftime('%y-%m-%d',inputevents_cv.charttime)