Using COC(=O)c1cc(Cc2c(C)c(OC)c(OC)c(OC)c2OC)ccc1-c1ccccc1OC to produce COc1ccccc1-c1ccc(Cc2c(C)c(OC)c(OC)c(OC)c2OC)cc1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.