Using NNc1c(Cl)cccc1Cl, CCOC=C(C(=O)OCC)C(=O)OCC to produce CCOC(=O)c1c[nH]n(-c2c(Cl)cccc2Cl)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.