Using CC(=O)OI1(OC(C)=O)(OC(C)=O)OC(=O)c2ccccc21, CC1(C)OC[C@@H](COc2ccc(CCCC(N)C#N)cc2)O1 to produce CC1(C)OC[C@@H](COc2ccc(CCC=O)cc2)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.