Using COc1ccc(Cn2ccn(C3CCc4ccccc4C3)c2=S)cc1OC to produce Oc1ccc(Cn2ccn(C3CCc4ccccc4C3)c2=S)cc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.