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: It belongs to the histamine h3 receptor modulator class of molecules.
user
Fc1cc(-c2ccc(N3CCC4(CC3)CCN(C3CCC3)CC4)nn2)ccc1Cl
assistant