You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a histamine h3 receptor modulator. Please represent the molecule in SMILES.
user
Cn1c(-c2ccc(C#N)cc2)nc2c1CCN(CC(=O)N1CCN(C3CCC3)CC1)C2
assistant