Using Clc1cnc2c(Br)cnn2c1, COC(=O)c1cc(B2OC(C)(C)C(C)(C)O2)c(C)s1 to produce COC(=O)c1cc(-c2cnn3cc(Cl)cnc23)c(C)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.