Using N=C(N)c1ccc(OCCCBr)cc1, O=C(Cl)OCc1ccccc1 to produce N=C(NC(=O)OCc1ccccc1)c1ccc(OCCCBr)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.