Using CCOC(=O)C=Cc1ccccc1NC(=O)c1ccc(OCCCOc2ccccc2)cc1 to produce CCOC(=O)CCc1ccccc1NC(=O)c1ccc(OCCCOc2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.