You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: The molecule is a muscarinic antagonist and belongs to the muscarinic receptor antagonist class of molecules.
user
O=C(NC1CCN(CC2CC=CCC2)CC1)C(O)(c1ccccc1)C1CCCC1
assistant