Using C=CCCCCCCCCCOc1ccc(-c2ccccc2)c(C(=O)O)c1CC to produce C=CCCCCCCCCCOc1ccc(-c2ccccc2)c(C(=O)O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.