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 tachykinin receptor antagonist. Please represent the molecule in SMILES.
user
COc1cc(C(=O)N2CCOC(CCN3CCC(C(=O)N4CCCC4)(c4ccccc4)CC3)(c3ccc(Cl)c(Cl)c3)C2)cc(OC)c1OC
assistant