You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a orexin receptor antagonist.
user
Cc1cccc(-c2sc(C3CC3)nc2C(=O)C(NC(=O)c2cccc(Br)c2)C2CCCCN2)c1
assistant