Using CC(C)(C)OC(=O)N1CCC(=O)CC1, CC(=O)c1ncccc1O to produce CC(C)(C)OC(=O)N1CCC2(CC1)CC(=O)c1ncccc1O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.