You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: The molecule is a tachykinin receptor antagonist and belongs to the tachykinin antagonist class of molecules.
user
CC(C)Oc1cccc(CC(=O)N2CCC(CCN3CCC(N4CCCCC4)CC3)(c3ccc(F)c(F)c3)C2)c1
assistant