instruction: what was the drug that was prescribed to patient 002-58884 on the first hospital visit via the mucous mem route for the first time?
response: SELECT medication.drugname FROM medication WHERE medication.patientunitstayid IN (SELECT patient.patientunitstayid FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '002-58884' AND NOT patient.hospitaldischargetime IS NULL ORDER BY patient.hospitaladmittime LIMIT 1)) AND medication.routeadmin = 'mucous mem' ORDER BY medication.drugstarttime LIMIT 1