Using CCOc1ccc(CCCC(=O)OC)cc1-c1cc(CCCC(=O)OC)ccc1OCC to produce CCOc1ccc(CCCC(=O)O)cc1-c1cc(CCCC(=O)O)ccc1OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.