Using O=C(CBr)NC12CC3CC(CC(C3)C1)C2, CCOC(=O)C(Cc1ccncc1)Cc1ccncc1 to produce O=C1CC(Cc2ccncc2)(Cc2ccncc2)C(=O)N1C12CC3CC(CC(C3)C1)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.