You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
It belongs to the anti histamine class of molecules. Use the above information to create a molecule.
user
CC(C)(C(=O)O)c1ccc(CCN2CCC(=C3c4ccc(Cl)cc4CCc4cccnc43)CC2)cc1
assistant