Using Cc1cc(C(=O)O)ncc1Br, COc1ccc(C(=O)C2CCNCC2)cc1 to produce COc1ccc(C(=O)C2CCN(C(=O)c3cc(C)c(Br)cn3)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.