You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule based on this description: It belongs to the pain treatment class of molecules.
user
COc1ccc2c3c1OC1C4(OC)CCC5(CC4CN(C)Cc4ccccc4)C(C2)N(CC2CC2)CCC315
assistant