instruction: how many prescriptions for 30 ml cup : alum & mag hydroxide-simeth 200-200-20 mg/5ml po susp have been ordered since 2 years ago?
response: SELECT COUNT(*) FROM medication WHERE medication.drugname = '30 ml cup : alum & mag hydroxide-simeth 200-200-20 mg/5ml po susp' AND DATETIME(medication.drugstarttime) >= DATETIME(CURRENT_TIME(), '-2 year')