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 anti tussive class of molecules.
user
CC1CC(N(C)C(=O)C=Cc2cccc(OC(F)(F)F)c2)C2Oc3c(O)ccc4c3C23CCN(C)C(C4)C13O
assistant