Using NCCN, CCOC(=N)COc1ccc(C(C(=O)OCC)C(=O)OCC)cc1 to produce CCOC(=O)C(C(=O)OCC)c1ccc(OCC2=NCCN2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.