Using Clc1nccc2ccc(Br)cc12, OB(O)c1ccc2[nH]ccc2c1 to produce c1cc2ccc(-c3ccc4[nH]ccc4c3)cc2c(-c2ccc3[nH]ccc3c2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.