Using CCOC(=O)c1cc(C#CCN(C)C(=O)OC(C)(C)C)cc(C(=O)OCC)c1 to produce CCOC(=O)c1cc(CCCN(C)C(=O)OC(C)(C)C)cc(C(=O)OCC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.