You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: It belongs to the tachykinin antagonist class of molecules.
user
CC(C(=O)NC1(c2ccccc2)CCC(N2CCC(c3ccc(F)cc3)CC2)CC1)c1cc(C(F)(F)F)cc(C(F)(F)F)c1.Cl
assistant