Using CC(=O)N1CCC(c2nsc(Nc3ncc(Br)cc3O)n2)CC1, OC1CCc2ncccc21 to produce CC(=O)N1CCC(c2nsc(Nc3ncc(Br)cc3OC3CCc4ncccc43)n2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.