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 a obesity treatment member of the mch antagonist class.
user
O=C(C=Cc1ccc(CN2CCCC2)cc1)Nc1ccc(Br)cc1
assistant