Using CCCCCCCCCCc1ccc2c(c1)C(=O)C(=COC(=O)c1ccccc1)CC2 to produce CCCCCCCCCCc1ccc2ccc(C)c(O)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.