how many days had it been since patient 76372 received her first acetaminophen prescription in the current hospital visit?
select 1 * ( strftime('%j',current_time) - strftime('%j',prescriptions.startdate) ) from prescriptions where prescriptions.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 76372 and admissions.dischtime is null ) and prescriptions.drug = 'acetaminophen' order by prescriptions.startdate asc limit 1