<s>[INST] Given an abstract text, please determine whether it contains any drug mentions. Provide a 'Yes' or 'No' answer based on the presence or absence of drugs. Abstract Text: Utility Of Botulinum Toxin Injection Of The Lower Esophageal Sphincter For Identifying Achalasia-Variant Cases Of Esophagogastric Junction Outflow Obstruction[/INST] Yes</s>