You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a tachykinin antagonist. Please write the SMILES representation of it.
user
CC(C(=O)NC1(c2ccccc2)CC=C(c2ccccn2)CC1)c1cc(C(F)(F)F)cc(C(F)(F)F)c1
assistant