Using Cc1c(O)nc2scc(C)n2c1=O, COc1ccc(C(=O)c2ccc(CBr)cc2)cc1 to produce COc1ccc(C(=O)c2ccc(COc3nc4scc(C)n4c(=O)c3C)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.