Using CC(C)(C)OC(=O)N1CCCCC1C1(O)CN(C(=O)OCc2ccccc2)C1 to produce CC(C)(C)OC(=O)N1CCCCC1C1(O)CNC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.