Using CC(C)(C)[Si](C)(C)Oc1cccc2ccc(-c3nnc4ccc(Br)cn34)nc12, OB(O)c1ccccc1 to produce Oc1cccc2ccc(-c3nnc4ccc(-c5ccccc5)cn34)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.