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 anti tussive.
user
CC(=O)Oc1ccc2c3c1CC1C4CCC(N(CC(C)C)C(=O)C=Cc5cc(Br)cs5)C(O2)C34CCN1C
assistant