Using CC(C)(C)OC(=O)N1CCC(n2cc(-c3cnc4cccc(Br)c4n3)cn2)CC1 to produce Brc1cccc2ncc(-c3cnn(C4CCNCC4)c3)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.