You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? It belongs to the tachykinin receptor antagonist class of molecules.
user
CC(OC1CN2CCCC(O)C2C1c1ccc(F)cc1)c1cc(C(F)(F)F)cc(C(F)(F)F)c1
assistant