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: The molecule is a pain treatment.
user
CC1c2nn(C)c(-c3cccc(Cl)c3)c2CCN1C(=O)c1ccc2[nH]c(=O)oc2c1
assistant