instruction: when was the last time until 1749 days ago that patient 006-66713 has had a p.o. intake?
response: SELECT intakeoutput.intakeoutputtime FROM intakeoutput WHERE intakeoutput.patientunitstayid IN (SELECT patient.patientunitstayid FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '006-66713')) AND intakeoutput.cellpath LIKE '%intake%' AND intakeoutput.celllabel = 'p.o.' AND DATETIME(intakeoutput.intakeoutputtime) <= DATETIME(CURRENT_TIME(), '-1749 day') ORDER BY intakeoutput.intakeoutputtime DESC LIMIT 1