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)Oc1cc(O)c2c3c1OC1C(N(CC(C)C)C(=O)C=Cc4ccoc4)CCC4C(C2)N(CCc2ccccc2)CCC341
assistant