The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of the following anticholinergic agent does not cross the blood brain barrier?   (A) Glycopyrrolate   (B) Atropine   (C) Hyoscine butylbromide   (D) Hyoscine hydrobromide
['(D) Hyoscine hydrobromide <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Glycopyrrolate \n (B) Atropine \n (C) Hyoscine butylbromide \n (D) Hyoscine hydrobromide <> possible answers', '  Which of the following anticholinergic agent does not cross the blood brain barrier? <> context@']