Using CCCCCOc1c(OC)cccc1-c1cccc(C=CC(=O)OC)c1 to produce CCCCCOc1c(OC)cccc1-c1cccc(C=CC(=O)O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.