You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: The molecule is a muscarinic receptor antagonist.
user
CC1CC2CN(C(=O)COC3(c4ccc(F)cc4Br)CC3)CC1N2c1ccc(C#N)cn1
assistant