You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule based on this description: The molecule is a tachykinin antagonist.
user
FC(F)(F)c1cc(COC2CCCN(Cc3nc(Br)no3)C2c2ccccc2)cc(C(F)(F)F)c1
assistant