Using CCOC(=O)CCC(=O)c1ccc(OCc2cc(C)ccc2C)cc1 to produce Cc1ccc(C)c(COc2ccc(C(=O)CCC(=O)O)cc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.