You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
It belongs to the muscarinic receptor antagonist class of molecules. Use the above information to create a molecule.
user
Cc1noc(C)c1COCC(=O)N1CC2CC(C)C(C1)N2c1ccc(C#N)cn1
assistant