Using COc1cccc(CCN2C(=O)c3ccccc3C2=O)c1, Brc1cccnc1 to produce COc1cccc(CCN2C(=O)c3ccccc3C2(O)c2cccnc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.