Using NCc1ccc(Oc2ccc(Br)cc2Cl)cc1, O=C(NC1(C(=O)O)CC1)c1cncnc1 to produce O=C(NC1(C(=O)NCc2ccc(Oc3ccc(Br)cc3Cl)cc2)CC1)c1cncnc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.