Using CCNc1ncn(Cc2ccc(OC)c(OCc3ccccc3)c2)c2nc(C(C)(C)OCc3ccccc3)nc1-2 to produce CCNc1ncn(Cc2ccc(OC)c(O)c2)c2nc(C(C)(C)O)nc1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.