You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: It belongs to the cgrpantagonists class of molecules.
user
CCc1cc(CC(CC(=O)N2CCC(N3CCc4ccccc4NC3=O)CC2)C(=O)N2CCC(C3CCNCC3)CC2)cc(Cl)c1N
assistant