Using CCOC(=O)CCC1(NC(=O)/C=C/c2ccccc2OC)C(=O)N(c2ccccc2)c2ccccc21 to produce CCOC(=O)CCC1(NC(=O)CCc2ccccc2OC)C(=O)N(c2ccccc2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.