Using COc1ccc(NC(=O)c2ccc(N3C(=O)CCc4ccccc43)cc2)cc1, CCBr to produce CCN(C(=O)c1ccc(N2C(=O)CCc3ccccc32)cc1)c1ccc(OC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.