You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? It belongs to the glucagon receptor antagonist class of molecules.
user
COC(=O)CCNC(=O)c1ccc(CCC(C)COc2cc(C)c(Br)c(C)c2)s1
assistant