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
CCOC(=O)C1=CCC2CCC1N2C(=O)OC(C)(C)C
assistant