You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a migraine treatment and belongs to the cgrp antagonist class of molecules. Please represent the molecule in SMILES.
user
Nc1c(Cl)cc(CC(OC(=O)N2CCC(N3CCc4ccccc4NC3=O)CC2)C(=O)N2CCC(C3CCN(CCC(=O)OCCN4CCCC4=O)CC3)CC2)cc1C(F)(F)F
assistant