Using O=C1NC(=O)C2(N1)C(=O)N(Cc1ccc(Br)cc1F)c1ccccc12, CC(C)(C)C(=O)OCCl to produce CC(C)(C)C(=O)OCN1C(=O)NC2(C1=O)C(=O)N(Cc1ccc(Br)cc1F)c1ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.