Using COC(=O)C(C)NC(=O)CSc1nnc(Br)n1-c1ccc(C2CC2)c2ccccc12 to produce CC(NC(=O)CSc1nnc(Br)n1-c1ccc(C2CC2)c2ccccc12)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.