Using C[C@H](c1ccc2ccc(Br)cc2n1)N(C)C(=O)OC(C)(C)C, C=CC1(C(=O)O)CCC(=O)CC1 to produce C[C@H](c1ccc2ccc(/C=C/C3(C(=O)O)CCC(=O)CC3)cc2n1)N(C)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.