You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: It belongs to the histamine receptor antagonist class of molecules.
user
COc1ncc(N2CC3(CCN(c4ccc(OC5CCN(C6CCC6)CC5)nc4)CC3)OC2=O)cn1
assistant