You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: It belongs to the muscarinic receptor antagonist class of molecules. Please represent the molecule in SMILES.
user
COc1ccc(CCN2CCCC(OC3c4ccccc4C=Cc4ccccc43)C2)cc1
assistant