Using O=C(CBr)Nc1ccc(Cl)cn1, CCOC(=O)c1n[nH]c(C(=O)OCC)c1OCC(F)(F)F to produce CCOC(=O)c1nn(CC(=O)Nc2ccc(Cl)cn2)c(C(=O)OCC)c1OCC(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.