You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is pain treatment. Use the above information to create a molecule.
user
CC1(C)C2CCC(CCN3C4CCCC3CC(n3c(=O)c(-c5cccc(=O)[nH]5)nc5ccccc53)C4)C1C2
assistant