Using CCOC(=O)CCCC=CCC(c1ccccc1)(c1ccccc1)c1ccccc1 to produce CCOC(=O)CCCCCCC(c1ccccc1)(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.