Using COC(=O)c1cc(Cc2c(C)c(OC)c(OC)c(OC)c2OC)ccc1OCc1ccccc1 to produce COC(=O)c1cc(Cc2c(C)c(OC)c(OC)c(OC)c2OC)ccc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.