Using CCOC(=O)/C=C/c1ccc(NC(=O)C(c2ccc(CN3N=C(c4ccccc4)OCC3=O)cc2)C(C)C)cc1 to produce CCOC(=O)CCc1ccc(NC(=O)C(c2ccc(CN3N=C(c4ccccc4)OCC3=O)cc2)C(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.