Using S=C=Nc1c(Cl)cncc1Cl, CNc1ccc(C(=O)OC)cc1N to produce COC(=O)c1ccc2c(c1)nc(Nc1c(Cl)cncc1Cl)n2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.