You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is a orexin receptor antagonist.
user
Cc1nnc(-c2ccccc2C(=O)NC2CCCC2Nc2nc3ccc(F)cc3s2)o1
assistant