Using COC(=O)c1ccc(Cn2cnc(CO)c2)cc1, BrCc1ccccc1 to produce O=C(O)c1ccc(Cn2cnc(COCc3ccccc3)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.