Using O=C(O)CC1CCc2cc(Br)cc3[nH]c(=O)c(=O)n1c23, CCOC(=O)c1ccc(N)cc1 to produce CCOC(=O)c1ccc(NC(=O)CC2CCc3cc(Br)cc4[nH]c(=O)c(=O)n2c34)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.