Using CC(C)(C)OC(=O)N1CCC(=O)N2C[C@@H](O)C[C@@H]2C1, Brc1cnc(C2CC2)cn1 to produce CC(C)(C)OC(=O)N1CCC(=O)N2C[C@@H](Oc3cnc(C4CC4)cn3)C[C@@H]2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.