Using Cc1cccc(CCOC(=O)c2ccc(OCCc3cccc(C)c3)c(C=O)c2)c1 to produce Cc1cccc(CCOc2ccc(C(=O)O)cc2C=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.