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
COC(=O)CC1C=CC(C(=O)CCCN2CCC(C(O)(c3ccccc3)c3ccccc3)CC2)=CC1(C)C
assistant