Using CCOC(=O)CNC(=O)N1CCN(c2ccccc2C(C)(C)C)CC1 to produce CC(C)(C)c1ccccc1N1CCN(C(=O)NCC(=O)O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.