Using C=CCC1Cn2c(ncc(C(=O)OCC)c2=O)-c2cc(OC)ccc21 to produce C=CCc1cn2c(=O)c(C(=O)OCC)cnc2c2cc(OC)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.