Using CCOC(=O)CCC(=O)c1cccc(OCc2c(C)cccc2C)c1 to produce CCOC(=O)CCC(O)c1cccc(OCc2c(C)cccc2C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.