Using Cc1cccc(CCOc2cc(C(=O)O)ccc2Br)c1, COC(=O)C1(N)Cc2ccccc2C1 to produce COC(=O)C1(NC(=O)c2ccc(Br)c(OCCc3cccc(C)c3)c2)Cc2ccccc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.