You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: It belongs to the pain treatment class of molecules.
user
OCC1OC(n2c(SNC3CCCC3)nc3c2NC=NC3(O)Cc2ccccc2)C(O)C1O
assistant