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: It belongs to the tachykinin receptor antagonist class of molecules. Please represent the molecule in SMILES.
user
CC(=O)N1CCC(C(=O)N2CCC(N(C)C(=O)c3ccc(-n4ccc(C)n4)cc3)C(c3ccc(Cl)c(Cl)c3)C2)CC1
assistant