You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a migraine treatment and belongs to the cgrp receptor antagonist class of molecules. Use the above information to create a molecule.
user
CC(C)(C)CN1Cc2c(cc(Cl)c3[nH]ncc23)CC(CC(=O)N2CCC(c3cc4sc(Br)cc4[nH]c3=O)CC2)C1=O
assistant