You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is a pain treatment and is cannabinoid receptor modulator.
user
CCOCCn1c(=O)c(C(=O)O)cc2c(-c3ccc(Cl)cc3)n(-c3ccc(Cl)cc3Cl)nc21
assistant