You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a migraine treatment and belongs to the cgrp receptor antagonist class of molecules.
user
C=C(C(F)=C(F)C=C(C)F)C1CC(N)C(=O)N(CC(F)(F)F)C1C
assistant