You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a tachykinin receptor antagonist and belongs to the tachykinin antagonist class of molecules.
user
CC(Cc1ccccc1)NCC(Cc1c[nH]c2ccccc12)NCC(=O)N1CCC(N2CCCCC2)CC1
assistant