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 cns disorder treatment and is histamine h3 receptor modulator.
user
CC(O)c1ccc2c(c1)CCN(CC(=O)N1CCN(C3CCC3)CC1)C2
assistant