You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is a muscarinic antagonist.
user
O=C(c1cncc(Cl)c1)N1CCC(CCN2CCC(n3c(=O)[nH]c4ccccc43)CC2)CC1
assistant