You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Can you create a molecule that matches the given characteristics? It belongs to the cgrpantagonists class of molecules.
user
Cc1c(Br)cc(CC(C(=O)N2CCC(C3CCN(C)CC3)CC2)C2CC(N3CCc4ccccc4NC3=O)CCN2C(=O)O)cc1Br
assistant