Using COc1c(Br)cc(C(=O)Cl)cc1Br, O=C1COc2ccncc2N1 to produce COc1c(Br)cc(C(=O)N2C(=O)COc3ccncc32)cc1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.