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. Please represent the molecule in SMILES.
user
OC(c1ccccc1)(c1n[nH]c(CC2CCNCC2)n1)C1CCCCC1
assistant