You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a tachykinin antagonist.
user
OC(CCc1cc(C(F)(F)F)cc(C(F)(F)F)c1)C1(c2ccccc2)CCC(N2CCC(c3ccc(F)cc3)CC2)CC1
assistant