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: The molecule is anti histaminic.
user
OCC1CN(Cc2ccccc2)CCN1CCCC(c1ccc(F)cc1)c1ccc(F)cc1
assistant