You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: The molecule is a orexin receptor antagonist.
user
Cc1nc(C(=O)N2CCCCC2Cc2nnc(-c3cc(F)cc(F)c3)o2)c(-c2ccc(F)cc2)s1
assistant