Using C=CN1C(=O)c2ccccc2C1=O, CCc1nc2cnc3cc(Br)ccc3c2n1CC(C)(C)O to produce CCc1nc2cnc3cc(C=CN4C(=O)c5ccccc5C4=O)ccc3c2n1CC(C)(C)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.