Using CC(C)(C)OC(=O)N1CCC(C2(C(=O)c3ccccn3)CCC2)C1 to produce CC(C)(C)OC(=O)N1CCC(C2(C(O)c3ccccn3)CCC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.