You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule based on this description: The molecule is a beta2 agonist and belongs to the muscarinic antagonist class of molecules.
user
O=C(O)NC(c1ccccc1)c1cccc(OCC(=O)Nc2cccc(CO)c2)c1
assistant