Using COc1cccc(CN2Cc3cc(OC)c(OCc4ccccc4)cc3CC2C)c1 to produce COc1cccc(CN2Cc3cc(OC)c(O)cc3CC2C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.