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: The molecule is a muscarinic antagonist and belongs to the beta2 agonist class of molecules. Please represent the molecule in SMILES.
user
O=C(OC1CN2CCC1CC2)N(Cc1cccc(OCCCCCCCCCNCC(O)c2ccc(O)c3[nH]c(=O)ccc23)c1)c1ccc(-c2ccccc2)cc1
assistant