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 member of the tachykinin antagonist class and affects pain treatment.
user
CCOc1cccc(-c2cccc(C3COC4(CCCNC4)C3)c2)c1-n1nnnc1C(F)(F)F
assistant