Using CCCCOc1cc(CCC(=O)OC)ccc1CCCc1ccc(OCC)c(OC)c1 to produce CCCCOc1cc(CCC(=O)O)ccc1CCCc1ccc(OCC)c(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.