You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: It belongs to the pain treatment class of molecules. Please represent the molecule in SMILES.
user
C=NC=CC1=C(C(=O)C(C)C)CN(C(C)C(N)=CC(C)=C(N)CCC)C1=O
assistant