Using CC1(C)OB(c2ccc3cc(NC(=O)c4ccsc4)ccc3c2)OC1(C)C, Cc1n[nH]c2ccc(Br)cc12 to produce Cc1n[nH]c2ccc(-c3ccc4cc(NC(=O)c5ccsc5)ccc4c3)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.