Using CC(C)(C)OC(=O)C(C)(C)Sc1nc(CCO)cs1, Clc1ncc(Br)cn1 to produce CC(C)(C)OC(=O)C(C)(C)Sc1nc(CCOc2ncc(Br)cn2)cs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.