Using CCOC(OCC)c1ccc(C(O)(c2ccc(OCOC)cc2)C(CC)c2ccccc2)cc1 to produce CC/C(=C(/c1ccc(O)cc1)c1ccc(C=O)cc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.