Using OB(O)c1ccc(Cl)cc1, CON1CCC2(CC1)C(O)=C(c1c(C)cc(Br)cc1Cl)C(=O)N2C to produce CON1CCC2(CC1)C(O)=C(c1c(C)cc(-c3ccc(Cl)cc3)cc1Cl)C(=O)N2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.