Using CC(C)(C)OC(=O)OC(=O)OC(C)(C)C, CCOC(=O)c1ccc(-c2ccccc2C#N)s1 to produce CCOC(=O)c1ccc(-c2ccccc2CNC(=O)OC(C)(C)C)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.