You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a anti allergic member of the anti histaminic class.
user
COc1ccc(CN2CCC(c3cn(CCCC4OCCO4)c4ccccc34)CC2)cc1C(=O)O
assistant