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): It belongs to both the tachykinin receptor antagonist and tachykinin antagonist classes of molecules.
user
O=C(Cc1cc(C(F)(F)F)cc(C(F)(F)F)c1)N1CCCC(CCN2CCN(C3CCCCC3)CC2)(c2cccc(Cl)c2)C1
assistant