Using COc1cc(C(OC)c2c[nH]c3ncccc23)ccc1OCc1ccccc1 to produce COc1cc(Cc2c[nH]c3ncccc23)ccc1OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.